23672556 has 72 divisors (see below), whose sum is σ = 64275120. Its totient is φ = 7323264.

The previous prime is 23672531. The next prime is 23672557. The reversal of 23672556 is 65527632.

It is a happy number.

23672556 is a `hidden beast` number, since 2 + 36 + 72 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 23672556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23672557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35926 + ... + 36578.

It is an arithmetic number, because the mean of its divisors is an integer number (892710).

Almost surely, 2^23672556 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 23672556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32137560).

23672556 is an abundant number, since it is smaller than the sum of its proper divisors (40602564).

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

23672556 is a wasteful number, since it uses less digits than its factorization.

23672556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 730 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 23672556 is about 4865.4450978302. The cubic root of 23672556 is about 287.1320803432.

The spelling of 23672556 in words is "twenty-three million, six hundred seventy-two thousand, five hundred fifty-six".