23151730 has 64 divisors (see below), whose sum is σ = 50429952. Its totient is φ = 7485120.

The previous prime is 23151727. The next prime is 23151743. The reversal of 23151730 is 3715132.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101877 + ... + 102103.

It is an arithmetic number, because the mean of its divisors is an integer number (787968).

Almost surely, 2^23151730 is an apocalyptic number.

23151730 is an abundant number, since it is smaller than the sum of its proper divisors (27278222).

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

23151730 is a wasteful number, since it uses less digits than its factorization.

23151730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 23151730 is about 4811.6244658119. The cubic root of 23151730 is about 285.0106900679.

Adding to 23151730 its reverse (3715132), we get a palindrome (26866862).

The spelling of 23151730 in words is "twenty-three million, one hundred fifty-one thousand, seven hundred thirty".