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20020220000 = 2554111753101
BaseRepresentation
bin10010101001010011…
…000101000001100000
31220200020120112212122
4102221103011001200
5312000134020000
613110330443412
71306056030224
oct225123050140
956606515778
1020020220000
11854398a670
123a68893568
131b70937231
14d7cc6a784
157c2912085
hex4a94c5060

20020220000 has 480 divisors, whose sum is σ = 58538186784. Its totient is φ = 6656000000.

The previous prime is 20020219931. The next prime is 20020220023. The reversal of 20020220000 is 2202002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20020220000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 198219950 + ... + 198220050.

Almost surely, 220020220000 is an apocalyptic number.

20020220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29269093392).

20020220000 is an abundant number, since it is smaller than the sum of its proper divisors (38517966784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020220000 is a wasteful number, since it uses less digits than its factorization.

20020220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

Adding to 20020220000 its reverse (2202002), we get a palindrome (20022422002).

The spelling of 20020220000 in words is "twenty billion, twenty million, two hundred twenty thousand".