22158402 has 16 divisors (see below), whose sum is σ = 50647872. Its totient is φ = 6330960.

The previous prime is 22158401. The next prime is 22158403. The reversal of 22158402 is 20485122.

It is an interprime number because it is at equal distance from previous prime (22158401) and next prime (22158403).

It is not an unprimeable number, because it can be changed into a prime (22158401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263749 + ... + 263832.

It is an arithmetic number, because the mean of its divisors is an integer number (3165492).

Almost surely, 2^22158402 is an apocalyptic number.

22158402 is an abundant number, since it is smaller than the sum of its proper divisors (28489470).

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

22158402 is a wasteful number, since it uses less digits than its factorization.

22158402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527593.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 22158402 is about 4707.2711840301. The cubic root of 22158402 is about 280.8748234058.

The spelling of 22158402 in words is "twenty-two million, one hundred fifty-eight thousand, four hundred two".