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20072037 = 3193491009
BaseRepresentation
bin100110010010…
…0011001100101
31101202202122210
41030210121211
520114301122
61554114033
7332416026
oct114443145
941682583
1020072037
111036a467
12687b919
13420a15b
142946c4d
151b6740c
hex1324665

20072037 has 16 divisors (see below), whose sum is σ = 28280000. Its totient is φ = 12628224.

The previous prime is 20072029. The next prime is 20072047. The reversal of 20072037 is 73027002.

It is not a de Polignac number, because 20072037 - 23 = 20072029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19389 + ... + 20397.

It is an arithmetic number, because the mean of its divisors is an integer number (1767500).

Almost surely, 220072037 is an apocalyptic number.

It is an amenable number.

20072037 is a deficient number, since it is larger than the sum of its proper divisors (8207963).

20072037 is a wasteful number, since it uses less digits than its factorization.

20072037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 20072037 is about 4480.1826971676. The cubic root of 20072037 is about 271.7672686657.

Adding to 20072037 its reverse (73027002), we get a palindrome (93099039).

The spelling of 20072037 in words is "twenty million, seventy-two thousand, thirty-seven".

Divisors: 1 3 19 57 349 1009 1047 3027 6631 19171 19893 57513 352141 1056423 6690679 20072037