78738270 has 32 divisors (see below), whose sum is σ = 203509152. Its totient is φ = 19381632.

The previous prime is 78738263. The next prime is 78738281. The reversal of 78738270 is 7283787.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100557 + ... + 101336.

It is an arithmetic number, because the mean of its divisors is an integer number (6359661).

Almost surely, 2^78738270 is an apocalyptic number.

78738270 is an abundant number, since it is smaller than the sum of its proper divisors (124770882).

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

78738270 is a wasteful number, since it uses less digits than its factorization.

78738270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201916.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 78738270 is about 8873.4587394093. The cubic root of 78738270 is about 428.6096611924.

The spelling of 78738270 in words is "seventy-eight million, seven hundred thirty-eight thousand, two hundred seventy".