22501938 has 8 divisors (see below), whose sum is σ = 45003888. Its totient is φ = 7500644.

The previous prime is 22501933. The next prime is 22501961. The reversal of 22501938 is 83910522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

22501938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22501933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1875156 + ... + 1875167.

It is an arithmetic number, because the mean of its divisors is an integer number (5625486).

Almost surely, 2^22501938 is an apocalyptic number.

22501938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22501938 is a wasteful number, since it uses less digits than its factorization.

22501938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750328.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 22501938 is about 4743.6207689907. The cubic root of 22501938 is about 282.3189138886.

The spelling of 22501938 in words is "twenty-two million, five hundred one thousand, nine hundred thirty-eight".