78179012 has 24 divisors (see below), whose sum is σ = 143942400. Its totient is φ = 37098656.

The previous prime is 78178981. The next prime is 78179029. The reversal of 78179012 is 21097187.

It is a super-2 number, since 2×78179012² = 12223915834592288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1133 + ... + 12555.

It is an arithmetic number, because the mean of its divisors is an integer number (5997600).

Almost surely, 2^78179012 is an apocalyptic number.

It is an amenable number.

78179012 is a deficient number, since it is larger than the sum of its proper divisors (65763388).

78179012 is a wasteful number, since it uses less digits than its factorization.

78179012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515 (or 11513 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 78179012 is about 8841.8896170445. The cubic root of 78179012 is about 427.5924804769.

The spelling of 78179012 in words is "seventy-eight million, one hundred seventy-nine thousand, twelve".