23157790 has 16 divisors (see below), whose sum is σ = 42256368. Its totient is φ = 9135936.

The previous prime is 23157773. The next prime is 23157809. The reversal of 23157790 is 9775132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15132 + ... + 16591.

It is an arithmetic number, because the mean of its divisors is an integer number (2641023).

Almost surely, 2^23157790 is an apocalyptic number.

23157790 is a deficient number, since it is larger than the sum of its proper divisors (19098578).

23157790 is a wasteful number, since it uses less digits than its factorization.

23157790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31803.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 23157790 is about 4812.2541495644. The cubic root of 23157790 is about 285.0355552235.

The spelling of 23157790 in words is "twenty-three million, one hundred fifty-seven thousand, seven hundred ninety".