22087438 has 16 divisors (see below), whose sum is σ = 35038080. Its totient is φ = 10425600.

The previous prime is 22087427. The next prime is 22087441. The reversal of 22087438 is 83478022.

It is a congruent number.

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, 1803 + ... + 6886.

It is an arithmetic number, because the mean of its divisors is an integer number (2189880).

Almost surely, 2^22087438 is an apocalyptic number.

22087438 is a deficient number, since it is larger than the sum of its proper divisors (12950642).

22087438 is a wasteful number, since it uses less digits than its factorization.

22087438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 22087438 is about 4699.7274389054. The cubic root of 22087438 is about 280.5746616157.

The spelling of 22087438 in words is "twenty-two million, eighty-seven thousand, four hundred thirty-eight".