78929240 has 32 divisors (see below), whose sum is σ = 191252880. Its totient is φ = 29142912.

The previous prime is 78929239. The next prime is 78929269. The reversal of 78929240 is 4292987.

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 7 ways as a sum of consecutive naturals, for example, 75374 + ... + 76413.

Almost surely, 2^78929240 is an apocalyptic number.

It is an amenable number.

78929240 is an abundant number, since it is smaller than the sum of its proper divisors (112323640).

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

78929240 is a wasteful number, since it uses less digits than its factorization.

78929240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151811 (or 151807 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 78929240 is about 8884.2129645794. The cubic root of 78929240 is about 428.9558947853.

The spelling of 78929240 in words is "seventy-eight million, nine hundred twenty-nine thousand, two hundred forty".