78250528 has 24 divisors (see below), whose sum is σ = 154335888. Its totient is φ = 39054144.

The previous prime is 78250519. The next prime is 78250537. The reversal of 78250528 is 82505287.

It is an interprime number because it is at equal distance from previous prime (78250519) and next prime (78250537).

It is a super-2 number, since 2×78250528² = 12246290264557568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18675 + ... + 22477.

It is an arithmetic number, because the mean of its divisors is an integer number (6430662).

Almost surely, 2^78250528 is an apocalyptic number.

It is an amenable number.

78250528 is a deficient number, since it is larger than the sum of its proper divisors (76085360).

78250528 is a wasteful number, since it uses less digits than its factorization.

78250528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456 (or 4448 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 78250528 is about 8845.9328507512. The cubic root of 78250528 is about 427.7228240021.

The spelling of 78250528 in words is "seventy-eight million, two hundred fifty thousand, five hundred twenty-eight".