78005372 has 12 divisors (see below), whose sum is σ = 137112360. Its totient is φ = 38830416.

The previous prime is 78005359. The next prime is 78005377. The reversal of 78005372 is 27350087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78005377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42047 + ... + 43862.

It is an arithmetic number, because the mean of its divisors is an integer number (11426030).

Almost surely, 2^78005372 is an apocalyptic number.

It is an amenable number.

78005372 is a deficient number, since it is larger than the sum of its proper divisors (59106988).

78005372 is a wasteful number, since it uses less digits than its factorization.

78005372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86140 (or 86138 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 78005372 is about 8832.0649907029. The cubic root of 78005372 is about 427.2756768004.

The spelling of 78005372 in words is "seventy-eight million, five thousand, three hundred seventy-two".