22936440 has 32 divisors (see below), whose sum is σ = 68809680. Its totient is φ = 6116352.

The previous prime is 22936409. The next prime is 22936471. The reversal of 22936440 is 4463922.

It is an interprime number because it is at equal distance from previous prime (22936409) and next prime (22936471).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22936398 and 22936407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95449 + ... + 95688.

Almost surely, 2^22936440 is an apocalyptic number.

22936440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22936440 is an abundant number, since it is smaller than the sum of its proper divisors (45873240).

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

22936440 is a wasteful number, since it uses less digits than its factorization.

22936440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191151 (or 191147 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 22936440 is about 4789.2003507893. The cubic root of 22936440 is about 284.1244908162.

The spelling of 22936440 in words is "twenty-two million, nine hundred thirty-six thousand, four hundred forty".