78328236 has 48 divisors (see below), whose sum is σ = 209570816. Its totient is φ = 22305024.

The previous prime is 78328219. The next prime is 78328253. The reversal of 78328236 is 63282387.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78328219) and next prime (78328253).

It is a super-2 number, since 2×78328236² = 12270625109743392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78328194 and 78328203.

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 15 ways as a sum of consecutive naturals, for example, 26925 + ... + 29691.

Almost surely, 2^78328236 is an apocalyptic number.

It is an amenable number.

78328236 is an abundant number, since it is smaller than the sum of its proper divisors (131242580).

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

78328236 is a wasteful number, since it uses less digits than its factorization.

78328236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118 (or 3116 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 78328236 is about 8850.3240618635. The cubic root of 78328236 is about 427.8643629360.

The spelling of 78328236 in words is "seventy-eight million, three hundred twenty-eight thousand, two hundred thirty-six".