123620772 has 24 divisors (see below), whose sum is σ = 314671392. Its totient is φ = 37460800.

The previous prime is 123620771. The next prime is 123620773. The reversal of 123620772 is 277026321.

It is an interprime number because it is at equal distance from previous prime (123620771) and next prime (123620773).

It is not an unprimeable number, because it can be changed into a prime (123620771) 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, 468129 + ... + 468392.

It is an arithmetic number, because the mean of its divisors is an integer number (13111308).

Almost surely, 2^123620772 is an apocalyptic number.

123620772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123620772 is an abundant number, since it is smaller than the sum of its proper divisors (191050620).

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

123620772 is a wasteful number, since it uses less digits than its factorization.

123620772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936539 (or 936537 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 123620772 is about 11118.4878468252. The cubic root of 123620772 is about 498.1542239393.

The spelling of 123620772 in words is "one hundred twenty-three million, six hundred twenty thousand, seven hundred seventy-two".