23661456 has 80 divisors (see below), whose sum is σ = 75245184. Its totient is φ = 6239232.

The previous prime is 23661431. The next prime is 23661487. The reversal of 23661456 is 65416632.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 1660 + ... + 7076.

Almost surely, 2^23661456 is an apocalyptic number.

23661456 is a gapful number since it is divisible by the number (26) 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 23661456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37622592).

23661456 is an abundant number, since it is smaller than the sum of its proper divisors (51583728).

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

23661456 is a wasteful number, since it uses less digits than its factorization.

23661456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448 (or 5442 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 23661456 is about 4864.3042667991. The cubic root of 23661456 is about 287.0871948314.

The spelling of 23661456 in words is "twenty-three million, six hundred sixty-one thousand, four hundred fifty-six".