78598040 has 16 divisors (see below), whose sum is σ = 176845680. Its totient is φ = 31439200.

The previous prime is 78598031. The next prime is 78598043. The reversal of 78598040 is 4089587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78598043) 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, 982436 + ... + 982515.

It is an arithmetic number, because the mean of its divisors is an integer number (11052855).

Almost surely, 2^78598040 is an apocalyptic number.

It is an amenable number.

78598040 is an abundant number, since it is smaller than the sum of its proper divisors (98247640).

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

78598040 is a wasteful number, since it uses less digits than its factorization.

78598040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964962 (or 1964958 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 78598040 is about 8865.5535642170. The cubic root of 78598040 is about 428.3550639082.

The spelling of 78598040 in words is "seventy-eight million, five hundred ninety-eight thousand, forty".