72878702 has 16 divisors (see below), whose sum is σ = 117917520. Its totient is φ = 33581952.

The previous prime is 72878681. The next prime is 72878723. The reversal of 72878702 is 20787827.

It is an interprime number because it is at equal distance from previous prime (72878681) and next prime (72878723).

It is a super-2 number, since 2×72878702² = 10622610410409608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72878702.

It is a congruent number.

It is an unprimeable number.

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, 17318 + ... + 21110.

It is an arithmetic number, because the mean of its divisors is an integer number (7369845).

Almost surely, 2^72878702 is an apocalyptic number.

72878702 is a deficient number, since it is larger than the sum of its proper divisors (45038818).

72878702 is a wasteful number, since it uses less digits than its factorization.

72878702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 72878702 is about 8536.9023656125. The cubic root of 72878702 is about 417.7023093512.

The spelling of 72878702 in words is "seventy-two million, eight hundred seventy-eight thousand, seven hundred two".