72762947 has 4 divisors (see below), whose sum is σ = 72796176. Its totient is φ = 72729720.

The previous prime is 72762931. The next prime is 72762953. The reversal of 72762947 is 74926727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72762947 - 2⁴ = 72762931 is a prime.

It is a super-2 number, since 2×72762947² = 10588892912249618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72762898 and 72762907.

It is not an unprimeable number, because it can be changed into a prime (72762917) 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 3 ways as a sum of consecutive naturals, for example, 13079 + ... + 17792.

It is an arithmetic number, because the mean of its divisors is an integer number (18199044).

Almost surely, 2^72762947 is an apocalyptic number.

72762947 is a deficient number, since it is larger than the sum of its proper divisors (33229).

72762947 is a wasteful number, since it uses less digits than its factorization.

72762947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33228.

The product of its digits is 296352, while the sum is 44.

The square root of 72762947 is about 8530.1199874328. The cubic root of 72762947 is about 417.4810432785.

The spelling of 72762947 in words is "seventy-two million, seven hundred sixty-two thousand, nine hundred forty-seven".