23553530 has 96 divisors (see below), whose sum is σ = 57552768. Its totient is φ = 6739200.

The previous prime is 23553529. The next prime is 23553553. The reversal of 23553530 is 3535532.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 23553530.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130040 + ... + 130220.

It is an arithmetic number, because the mean of its divisors is an integer number (599508).

Almost surely, 2^23553530 is an apocalyptic number.

23553530 is an abundant number, since it is smaller than the sum of its proper divisors (33999238).

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

23553530 is a wasteful number, since it uses less digits than its factorization.

23553530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 26.

The square root of 23553530 is about 4853.1979147774. The cubic root of 23553530 is about 286.6500365931.

It can be divided in two parts, 2355 and 3530, that added together give a palindrome (5885).

The spelling of 23553530 in words is "twenty-three million, five hundred fifty-three thousand, five hundred thirty".