78057836 has 6 divisors (see below), whose sum is σ = 136601220. Its totient is φ = 39028916.

The previous prime is 78057797. The next prime is 78057841. The reversal of 78057836 is 63875087.

It is a super-2 number, since 2×78057836² = 12186051522005792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9757226 + ... + 9757233.

It is an arithmetic number, because the mean of its divisors is an integer number (22766870).

Almost surely, 2^78057836 is an apocalyptic number.

It is an amenable number.

78057836 is a deficient number, since it is larger than the sum of its proper divisors (58543384).

78057836 is a wasteful number, since it uses less digits than its factorization.

78057836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19514463 (or 19514461 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 78057836 is about 8835.0345783138. The cubic root of 78057836 is about 427.3714461337.

The spelling of 78057836 in words is "seventy-eight million, fifty-seven thousand, eight hundred thirty-six".