78250656 has 48 divisors (see below), whose sum is σ = 224084448. Its totient is φ = 23712000.

The previous prime is 78250637. The next prime is 78250661. The reversal of 78250656 is 65605287.

78250656 = T₄₈₃ + T₄₈₄ + ... + T₈₃₄.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×78250656² = 12246330328860672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35995 + ... + 38106.

It is an arithmetic number, because the mean of its divisors is an integer number (4668426).

Almost surely, 2^78250656 is an apocalyptic number.

It is an amenable number.

78250656 is an abundant number, since it is smaller than the sum of its proper divisors (145833792).

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

78250656 is a wasteful number, since it uses less digits than its factorization.

78250656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74125 (or 74117 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 78250656 is about 8845.9400857116. The cubic root of 78250656 is about 427.7230572210.

The spelling of 78250656 in words is "seventy-eight million, two hundred fifty thousand, six hundred fifty-six".