123790656 has 56 divisors (see below), whose sum is σ = 357310944. Its totient is φ = 37511680.

The previous prime is 123790633. The next prime is 123790661. The reversal of 123790656 is 656097321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27195 + ... + 31418.

Almost surely, 2^123790656 is an apocalyptic number.

123790656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123790656 is an abundant number, since it is smaller than the sum of its proper divisors (233520288).

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

123790656 is a wasteful number, since it uses less digits than its factorization.

123790656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58639 (or 58629 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 123790656 is about 11126.1249318889. The cubic root of 123790656 is about 498.3823131563.

The spelling of 123790656 in words is "one hundred twenty-three million, seven hundred ninety thousand, six hundred fifty-six".