78226792 has 32 divisors (see below), whose sum is σ = 177491520. Its totient is φ = 31553280.

The previous prime is 78226787. The next prime is 78226801. The reversal of 78226792 is 29762287.

It is a happy number.

It is a super-2 number, since 2×78226792² = 12238861973222528, 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, 40134 + ... + 42037.

It is an arithmetic number, because the mean of its divisors is an integer number (5546610).

Almost surely, 2^78226792 is an apocalyptic number.

It is an amenable number.

78226792 is an abundant number, since it is smaller than the sum of its proper divisors (99264728).

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

78226792 is a wasteful number, since it uses less digits than its factorization.

78226792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82201 (or 82197 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 78226792 is about 8844.5911154784. The cubic root of 78226792 is about 427.6795720868.

The spelling of 78226792 in words is "seventy-eight million, two hundred twenty-six thousand, seven hundred ninety-two".