23420310 has 32 divisors (see below), whose sum is σ = 56505600. Its totient is φ = 6212448.

The previous prime is 23420281. The next prime is 23420323. The reversal of 23420310 is 1302432.

It is a super-2 number, since 2×23420310² = 1097021840992200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23420310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4009 + ... + 7931.

It is an arithmetic number, because the mean of its divisors is an integer number (1765800).

Almost surely, 2^23420310 is an apocalyptic number.

23420310 is an abundant number, since it is smaller than the sum of its proper divisors (33085290).

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

23420310 is a wasteful number, since it uses less digits than its factorization.

23420310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23420310 is about 4839.4534815411. The cubic root of 23420310 is about 286.1085785918.

Adding to 23420310 its reverse (1302432), we get a palindrome (24722742).

The spelling of 23420310 in words is "twenty-three million, four hundred twenty thousand, three hundred ten".