23155132 has 48 divisors (see below), whose sum is σ = 54415872. Its totient is φ = 8326080.

The previous prime is 23155127. The next prime is 23155147.

23155132 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 1113 + ... + 6895.

It is an arithmetic number, because the mean of its divisors is an integer number (1133664).

Almost surely, 2^23155132 is an apocalyptic number.

23155132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23155132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27207936).

23155132 is an abundant number, since it is smaller than the sum of its proper divisors (31260740).

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

23155132 is a wasteful number, since it uses less digits than its factorization.

23155132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818 (or 5816 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 23155132 is about 4811.9779716869. The cubic root of 23155132 is about 285.0246495557.

It can be divided in two parts, 2315 and 5132, that added together give a palindrome (7447).

The spelling of 23155132 in words is "twenty-three million, one hundred fifty-five thousand, one hundred thirty-two".