78338264 has 8 divisors (see below), whose sum is σ = 146884260. Its totient is φ = 39169128.

The previous prime is 78338257. The next prime is 78338291. The reversal of 78338264 is 46283387.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78338264² = 12273767213067392, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 4896134 + ... + 4896149.

Almost surely, 2^78338264 is an apocalyptic number.

It is an amenable number.

78338264 is a deficient number, since it is larger than the sum of its proper divisors (68545996).

78338264 is a wasteful number, since it uses less digits than its factorization.

78338264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792289 (or 9792285 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 78338264 is about 8850.8905766595. The cubic root of 78338264 is about 427.8826213188.

The spelling of 78338264 in words is "seventy-eight million, three hundred thirty-eight thousand, two hundred sixty-four".