72929865 has 8 divisors (see below), whose sum is σ = 116687808. Its totient is φ = 38895920.

The previous prime is 72929863. The next prime is 72929903. The reversal of 72929865 is 56892927.

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

It is not a de Polignac number, because 72929865 - 2¹ = 72929863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72929863) 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 7 ways as a sum of consecutive naturals, for example, 2430981 + ... + 2431010.

It is an arithmetic number, because the mean of its divisors is an integer number (14585976).

Almost surely, 2^72929865 is an apocalyptic number.

It is an amenable number.

72929865 is a deficient number, since it is larger than the sum of its proper divisors (43757943).

72929865 is a wasteful number, since it uses less digits than its factorization.

72929865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861999.

The product of its digits is 544320, while the sum is 48.

The square root of 72929865 is about 8539.8984185996. The cubic root of 72929865 is about 417.8000329367.

The spelling of 72929865 in words is "seventy-two million, nine hundred twenty-nine thousand, eight hundred sixty-five".