78125236 has 12 divisors (see below), whose sum is σ = 156250528. Its totient is φ = 33482232.

The previous prime is 78125197. The next prime is 78125279. The reversal of 78125236 is 63252187.

It is a happy number.

78125236 is an admirable number.

It is a super-2 number, since 2×78125236² = 12207105000111392, which contains 22 as substring.

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

It is a congruent number.

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, 1395066 + ... + 1395121.

Almost surely, 2^78125236 is an apocalyptic number.

It is an amenable number.

78125236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78125236 is a wasteful number, since it uses less digits than its factorization.

78125236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790198 (or 2790196 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 78125236 is about 8838.8481149978. The cubic root of 78125236 is about 427.4944171267.

The spelling of 78125236 in words is "seventy-eight million, one hundred twenty-five thousand, two hundred thirty-six".