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72950015 = 571205493
BaseRepresentation
bin1000101100100…
…10000011111111
312002021020121102
410112102003333
5122133400030
611123323315
71544031155
oct426220377
9162236542
1072950015
11381a6476
122052053b
13121624b8
14998d3d5
15660ec45
hex45920ff

72950015 has 8 divisors (see below), whose sum is σ = 88773408. Its totient is φ = 57537760.

The previous prime is 72949999. The next prime is 72950021. The reversal of 72950015 is 51005927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72950015 - 24 = 72949999 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 72950015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102392 + ... + 103101.

It is an arithmetic number, because the mean of its divisors is an integer number (11096676).

Almost surely, 272950015 is an apocalyptic number.

72950015 is a deficient number, since it is larger than the sum of its proper divisors (15823393).

72950015 is a wasteful number, since it uses less digits than its factorization.

72950015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205569.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 72950015 is about 8541.0780935430. The cubic root of 72950015 is about 417.8385077803.

The spelling of 72950015 in words is "seventy-two million, nine hundred fifty thousand, fifteen".

Divisors: 1 5 71 355 205493 1027465 14590003 72950015