23402502 has 12 divisors (see below), whose sum is σ = 50705460. Its totient is φ = 7800828.

The previous prime is 23402479. The next prime is 23402531. The reversal of 23402502 is 20520432.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1300139 = 23402502 / (2 + 3 + 4 + 0 + 2 + 5 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 650052 + ... + 650087.

It is an arithmetic number, because the mean of its divisors is an integer number (4225455).

Almost surely, 2^23402502 is an apocalyptic number.

23402502 is an abundant number, since it is smaller than the sum of its proper divisors (27302958).

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

23402502 is a wasteful number, since it uses less digits than its factorization.

23402502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300147 (or 1300144 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23402502 is about 4837.6132544882. The cubic root of 23402502 is about 286.0360444897.

Adding to 23402502 its reverse (20520432), we get a palindrome (43922934).

The spelling of 23402502 in words is "twenty-three million, four hundred two thousand, five hundred two".