23145582 has 32 divisors (see below), whose sum is σ = 47496960. Its totient is φ = 7516800.

The previous prime is 23145581. The next prime is 23145583. The reversal of 23145582 is 28554132.

It is an interprime number because it is at equal distance from previous prime (23145581) and next prime (23145583).

It is a super-2 number, since 2×23145582² = 1071435932237448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53238 + ... + 53670.

It is an arithmetic number, because the mean of its divisors is an integer number (1484280).

Almost surely, 2^23145582 is an apocalyptic number.

23145582 is an abundant number, since it is smaller than the sum of its proper divisors (24351378).

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

23145582 is a wasteful number, since it uses less digits than its factorization.

23145582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its digits is 9600, while the sum is 30.

The square root of 23145582 is about 4810.9855539172. The cubic root of 23145582 is about 284.9854593997.

The spelling of 23145582 in words is "twenty-three million, one hundred forty-five thousand, five hundred eighty-two".