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3997486080 = 210385717
BaseRepresentation
bin1110111001000100…
…1100110000000000
3101022120222100000000
43232101030300000
531141324023310
61500400000000
7201030033240
oct35621146000
911276870000
103997486080
111771527505
12936900000
134b92513a3
1429cc9bb20
15185e2a4c0
hexee44cc00

3997486080 has 792 divisors, whose sum is σ = 17404871328. Its totient is φ = 859963392.

The previous prime is 3997486069. The next prime is 3997486093. The reversal of 3997486080 is 806847993.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 235146232 + ... + 235146248.

Almost surely, 23997486080 is an apocalyptic number.

3997486080 is a gapful number since it is divisible by the number (30) 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 3997486080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8702435664).

3997486080 is an abundant number, since it is smaller than the sum of its proper divisors (13407385248).

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

3997486080 is an frugal number, since it uses more digits than its factorization.

3997486080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 3997486080 is about 63225.6757971000. The cubic root of 3997486080 is about 1587.0684323392.

The spelling of 3997486080 in words is "three billion, nine hundred ninety-seven million, four hundred eighty-six thousand, eighty".