78030072 has 48 divisors (see below), whose sum is σ = 211979040. Its totient is φ = 25930368.

The previous prime is 78030067. The next prime is 78030101. The reversal of 78030072 is 27003087.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24948 + ... + 27900.

It is an arithmetic number, because the mean of its divisors is an integer number (4416230).

Almost surely, 2^78030072 is an apocalyptic number.

78030072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78030072 is an abundant number, since it is smaller than the sum of its proper divisors (133948968).

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

78030072 is a wasteful number, since it uses less digits than its factorization.

78030072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 78030072 is about 8833.4631940140. The cubic root of 78030072 is about 427.3207702566.

The spelling of 78030072 in words is "seventy-eight million, thirty thousand, seventy-two".