78001872 has 40 divisors (see below), whose sum is σ = 217006944. Its totient is φ = 24000384.

The previous prime is 78001867. The next prime is 78001873. The reversal of 78001872 is 27810087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78001873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61878 + ... + 63125.

Almost surely, 2^78001872 is an apocalyptic number.

It is an amenable number.

78001872 is an abundant number, since it is smaller than the sum of its proper divisors (139005072).

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

78001872 is a wasteful number, since it uses less digits than its factorization.

78001872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125027 (or 125021 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 78001872 is about 8831.8668468224. The cubic root of 78001872 is about 427.2692862694.

The spelling of 78001872 in words is "seventy-eight million, one thousand, eight hundred seventy-two".