22153780 has 24 divisors (see below), whose sum is σ = 50752800. Its totient is φ = 8055840.

The previous prime is 22153777. The next prime is 22153801. The reversal of 22153780 is 8735122.

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, 50130 + ... + 50569.

It is an arithmetic number, because the mean of its divisors is an integer number (2114700).

Almost surely, 2^22153780 is an apocalyptic number.

22153780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22153780 is an abundant number, since it is smaller than the sum of its proper divisors (28599020).

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

22153780 is a wasteful number, since it uses less digits than its factorization.

22153780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100719 (or 100717 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 22153780 is about 4706.7802158163. The cubic root of 22153780 is about 280.8552929104.

It can be divided in two parts, 2215 and 3780, that added together give a palindrome (5995).

The spelling of 22153780 in words is "twenty-two million, one hundred fifty-three thousand, seven hundred eighty".