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72358897 = 13192347271
BaseRepresentation
bin1000101000000…
…01101111110001
312001011012202011
410110001233301
5122010441042
611102522521
71536016612
oct424015761
9161135664
1072358897
1137932346
1220296441
1311cb6420
149877c09
156544a17
hex4501bf1

72358897 has 32 divisors (see below), whose sum is σ = 87736320. Its totient is φ = 59019840.

The previous prime is 72358883. The next prime is 72358921. The reversal of 72358897 is 79885327.

It is a de Polignac number, because none of the positive numbers 2k-72358897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72358897.

It is not an unprimeable number, because it can be changed into a prime (72358837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266872 + ... + 267142.

It is an arithmetic number, because the mean of its divisors is an integer number (2741760).

Almost surely, 272358897 is an apocalyptic number.

It is an amenable number.

72358897 is a deficient number, since it is larger than the sum of its proper divisors (15377423).

72358897 is a wasteful number, since it uses less digits than its factorization.

With its successor (72358898) it forms an eRAP, since the sums of their prime factors are consecutive (373 and 374).

72358897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373.

The product of its digits is 846720, while the sum is 49.

The square root of 72358897 is about 8506.4032939898. The cubic root of 72358897 is about 416.7068561412.

The spelling of 72358897 in words is "seventy-two million, three hundred fifty-eight thousand, eight hundred ninety-seven".

Divisors: 1 13 19 23 47 247 271 299 437 611 893 1081 3523 5149 5681 6233 11609 12737 14053 20539 66937 81029 118427 165581 242003 267007 292951 1539551 3146039 3808363 5566069 72358897