72947876 has 12 divisors (see below), whose sum is σ = 132061020. Its totient is φ = 35216160.

The previous prime is 72947869. The next prime is 72947891. The reversal of 72947876 is 67874927.

It can be written as a sum of positive squares in 2 ways, for example, as 58125376 + 14822500 = 7624^2 + 3850^2 .

It is a super-2 number, since 2×72947876² = 10642785225822752, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314315 + ... + 314546.

It is an arithmetic number, because the mean of its divisors is an integer number (11005085).

Almost surely, 2^72947876 is an apocalyptic number.

It is an amenable number.

72947876 is a deficient number, since it is larger than the sum of its proper divisors (59113144).

72947876 is a wasteful number, since it uses less digits than its factorization.

72947876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628894 (or 628892 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 72947876 is about 8540.9528742407. The cubic root of 72947876 is about 417.8344238638.

The spelling of 72947876 in words is "seventy-two million, nine hundred forty-seven thousand, eight hundred seventy-six".