22154290 has 16 divisors (see below), whose sum is σ = 41611968. Its totient is φ = 8476336.

The previous prime is 22154273. The next prime is 22154291. The reversal of 22154290 is 9245122.

It is not an unprimeable number, because it can be changed into a prime (22154291) 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, 47932 + ... + 48391.

It is an arithmetic number, because the mean of its divisors is an integer number (2600748).

Almost surely, 2^22154290 is an apocalyptic number.

22154290 is a deficient number, since it is larger than the sum of its proper divisors (19457678).

22154290 is a wasteful number, since it uses less digits than its factorization.

22154290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96353.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 22154290 is about 4706.8343926678. The cubic root of 22154290 is about 280.8574480746.

It can be divided in two parts, 2 and 2154290, that multiplied together give a triangular number (4308580 = T₂₉₃₅).

The spelling of 22154290 in words is "twenty-two million, one hundred fifty-four thousand, two hundred ninety".