23661450 has 96 divisors (see below), whose sum is σ = 69102720. Its totient is φ = 5932800.

The previous prime is 23661431. The next prime is 23661487. The reversal of 23661450 is 5416632.

It is a super-2 number, since 2×23661450² = 1119728432205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22435 + ... + 23465.

It is an arithmetic number, because the mean of its divisors is an integer number (719820).

Almost surely, 2^23661450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23661450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34551360).

23661450 is an abundant number, since it is smaller than the sum of its proper divisors (45441270).

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

23661450 is a wasteful number, since it uses less digits than its factorization.

23661450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23661450 is about 4864.3036500613. The cubic root of 23661450 is about 287.0871705652.

The spelling of 23661450 in words is "twenty-three million, six hundred sixty-one thousand, four hundred fifty".