72957747 has 16 divisors (see below), whose sum is σ = 101122560. Its totient is φ = 46747872.

The previous prime is 72957721. The next prime is 72957757. The reversal of 72957747 is 74775927.

It is not a de Polignac number, because 72957747 - 2¹¹ = 72955699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72957696 and 72957705.

It is not an unprimeable number, because it can be changed into a prime (72957757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5254 + ... + 13172.

It is an arithmetic number, because the mean of its divisors is an integer number (6320160).

Almost surely, 2^72957747 is an apocalyptic number.

72957747 is a deficient number, since it is larger than the sum of its proper divisors (28164813).

72957747 is a wasteful number, since it uses less digits than its factorization.

72957747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042.

The product of its digits is 864360, while the sum is 48.

The square root of 72957747 is about 8541.5307176173. The cubic root of 72957747 is about 417.8532695466.

The spelling of 72957747 in words is "seventy-two million, nine hundred fifty-seven thousand, seven hundred forty-seven".