78152908 has 6 divisors (see below), whose sum is σ = 136767596. Its totient is φ = 39076452.

The previous prime is 78152861. The next prime is 78152911. The reversal of 78152908 is 80925187.

It is a super-2 number, since 2×78152908² = 12215754057712928, 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, 9769110 + ... + 9769117.

Almost surely, 2^78152908 is an apocalyptic number.

It is an amenable number.

78152908 is a deficient number, since it is larger than the sum of its proper divisors (58614688).

78152908 is a wasteful number, since it uses less digits than its factorization.

78152908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19538231 (or 19538229 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 78152908 is about 8840.4133387529. The cubic root of 78152908 is about 427.5448840851.

The spelling of 78152908 in words is "seventy-eight million, one hundred fifty-two thousand, nine hundred eight".