23491930 has 32 divisors (see below), whose sum is σ = 52721280. Its totient is φ = 7321920.

The previous prime is 23491921. The next prime is 23491939. The reversal of 23491930 is 3919432.

It is an interprime number because it is at equal distance from previous prime (23491921) and next prime (23491939).

It is a junction number, because it is equal to n+sod(n) for n = 23491892 and 23491901.

It is not an unprimeable number, because it can be changed into a prime (23491939) 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, 14485 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (1647540).

Almost surely, 2^23491930 is an apocalyptic number.

23491930 is an abundant number, since it is smaller than the sum of its proper divisors (29229350).

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

23491930 is a wasteful number, since it uses less digits than its factorization.

23491930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30534.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23491930 is about 4846.8474289996. The cubic root of 23491930 is about 286.3999246408.

The spelling of 23491930 in words is "twenty-three million, four hundred ninety-one thousand, nine hundred thirty".