23155450 has 24 divisors (see below), whose sum is σ = 44461440. Its totient is φ = 8962800.

The previous prime is 23155373. The next prime is 23155463. The reversal of 23155450 is 5455132.

23155450 = T₇₄₈ + T₇₄₉ + ... + T₈₂₂.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5920 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (1852560).

Almost surely, 2^23155450 is an apocalyptic number.

23155450 is a deficient number, since it is larger than the sum of its proper divisors (21305990).

23155450 is a wasteful number, since it uses less digits than its factorization.

23155450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14982 (or 14977 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 23155450 is about 4812.0110141187. The cubic root of 23155450 is about 285.0259543409.

The spelling of 23155450 in words is "twenty-three million, one hundred fifty-five thousand, four hundred fifty".