123815552 has 96 divisors (see below), whose sum is σ = 302328000. Its totient is φ = 50222592.

The previous prime is 123815537. The next prime is 123815557. The reversal of 123815552 is 255518321.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (123815557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118649 + ... + 119687.

It is an arithmetic number, because the mean of its divisors is an integer number (3149250).

Almost surely, 2^123815552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123815552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151164000).

123815552 is an abundant number, since it is smaller than the sum of its proper divisors (178512448).

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

123815552 is a wasteful number, since it uses less digits than its factorization.

123815552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1067 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 123815552 is about 11127.2436838599. The cubic root of 123815552 is about 498.4157214247.

The spelling of 123815552 in words is "one hundred twenty-three million, eight hundred fifteen thousand, five hundred fifty-two".