123191488 has 84 divisors (see below), whose sum is σ = 287301432. Its totient is φ = 52254720.

The previous prime is 123191477. The next prime is 123191491. The reversal of 123191488 is 884191321.

It is a super-2 number, since 2×123191488² = 30352285431308288, which contains 22 as substring.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 123191488 = 160³ + 492³ = 358³ + 426³.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511048 + ... + 511288.

Almost surely, 2^123191488 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 123191488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143650716).

123191488 is an abundant number, since it is smaller than the sum of its proper divisors (164109944).

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

123191488 is a wasteful number, since it uses less digits than its factorization.

123191488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 413 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 123191488 is about 11099.1660948019. The cubic root of 123191488 is about 497.5769270706.

The spelling of 123191488 in words is "one hundred twenty-three million, one hundred ninety-one thousand, four hundred eighty-eight".