23090236 has 12 divisors (see below), whose sum is σ = 43516312. Its totient is φ = 10657008.

The previous prime is 23090219. The next prime is 23090261. The reversal of 23090236 is 63209032.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 23090236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221970 + ... + 222073.

Almost surely, 2^23090236 is an apocalyptic number.

23090236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23090236 is a deficient number, since it is larger than the sum of its proper divisors (20426076).

23090236 is a wasteful number, since it uses less digits than its factorization.

23090236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444060 (or 444058 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 23090236 is about 4805.2300673329. The cubic root of 23090236 is about 284.7581245243.

Adding to 23090236 its reverse (63209032), we get a palindrome (86299268).

The spelling of 23090236 in words is "twenty-three million, ninety thousand, two hundred thirty-six".