78898356 has 36 divisors (see below), whose sum is σ = 204831172. Its totient is φ = 25588224.

The previous prime is 78898307. The next prime is 78898361. The reversal of 78898356 is 65389887.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44675856 + 34222500 = 6684^2 + 5850^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 28285 + ... + 30948.

Almost surely, 2^78898356 is an apocalyptic number.

It is an amenable number.

78898356 is an abundant number, since it is smaller than the sum of its proper divisors (125932816).

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

78898356 is a wasteful number, since it uses less digits than its factorization.

78898356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59280 (or 59275 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 78898356 is about 8882.4746551848. The cubic root of 78898356 is about 428.8999391718.

The spelling of 78898356 in words is "seventy-eight million, eight hundred ninety-eight thousand, three hundred fifty-six".