123770928 has 80 divisors (see below), whose sum is σ = 330978816. Its totient is φ = 39832320.

The previous prime is 123770903. The next prime is 123771007. The reversal of 123770928 is 829077321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186918 + ... + 187578.

Almost surely, 2^123770928 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 123770928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165489408).

123770928 is an abundant number, since it is smaller than the sum of its proper divisors (207207888).

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

123770928 is a wasteful number, since it uses less digits than its factorization.

123770928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 123770928 is about 11125.2383345257. The cubic root of 123770928 is about 498.3558367137.

The spelling of 123770928 in words is "one hundred twenty-three million, seven hundred seventy thousand, nine hundred twenty-eight".