78992956 has 24 divisors (see below), whose sum is σ = 166302080. Its totient is φ = 32072112.

The previous prime is 78992911. The next prime is 78992957. The reversal of 78992956 is 65929987.

It is a junction number, because it is equal to n+sod(n) for n = 78992897 and 78992906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78992957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73710 + ... + 74773.

Almost surely, 2^78992956 is an apocalyptic number.

78992956 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78992956 is an abundant number, since it is smaller than the sum of its proper divisors (87309124).

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

78992956 is a wasteful number, since it uses less digits than its factorization.

78992956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148513 (or 148511 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 78992956 is about 8887.7981525235. The cubic root of 78992956 is about 429.0712892940.

The spelling of 78992956 in words is "seventy-eight million, nine hundred ninety-two thousand, nine hundred fifty-six".