78533900 has 36 divisors (see below), whose sum is σ = 172593120. Its totient is φ = 31012800.

The previous prime is 78533899. The next prime is 78533927. The reversal of 78533900 is 933587.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2930 + ... + 12870.

Almost surely, 2^78533900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78533900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86296560).

78533900 is an abundant number, since it is smaller than the sum of its proper divisors (94059220).

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

78533900 is a wasteful number, since it uses less digits than its factorization.

78533900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034 (or 10027 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 78533900 is about 8861.9354545156. The cubic root of 78533900 is about 428.2385123556.

The spelling of 78533900 in words is "seventy-eight million, five hundred thirty-three thousand, nine hundred".