23545290 has 32 divisors (see below), whose sum is σ = 56880000. Its totient is φ = 6237504.

The previous prime is 23545273. The next prime is 23545309. The reversal of 23545290 is 9254532.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 2211 + ... + 7209.

It is an arithmetic number, because the mean of its divisors is an integer number (1777500).

Almost surely, 2^23545290 is an apocalyptic number.

23545290 is an abundant number, since it is smaller than the sum of its proper divisors (33334710).

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

23545290 is a wasteful number, since it uses less digits than its factorization.

23545290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 23545290 is about 4852.3489157314. The cubic root of 23545290 is about 286.6166053439.

The spelling of 23545290 in words is "twenty-three million, five hundred forty-five thousand, two hundred ninety".