23399340 has 24 divisors (see below), whose sum is σ = 65518320. Its totient is φ = 6239808.

The previous prime is 23399339. The next prime is 23399359. The reversal of 23399340 is 4399332.

It is a super-2 number, since 2×23399340² = 1095058224871200, which contains 22 as substring.

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, 194935 + ... + 195054.

It is an arithmetic number, because the mean of its divisors is an integer number (2729930).

Almost surely, 2^23399340 is an apocalyptic number.

23399340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23399340 is an abundant number, since it is smaller than the sum of its proper divisors (42118980).

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

23399340 is a wasteful number, since it uses less digits than its factorization.

23399340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390001 (or 389999 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 23399340 is about 4837.2864293941. The cubic root of 23399340 is about 286.0231614411.

The spelling of 23399340 in words is "twenty-three million, three hundred ninety-nine thousand, three hundred forty".