22375440 has 120 divisors (see below), whose sum is σ = 77995008. Its totient is φ = 5961600.

The previous prime is 22375427. The next prime is 22375453. The reversal of 22375440 is 4457322.

It is an interprime number because it is at equal distance from previous prime (22375427) and next prime (22375453).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18865 + ... + 20015.

Almost surely, 2^22375440 is an apocalyptic number.

22375440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22375440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38997504).

22375440 is an abundant number, since it is smaller than the sum of its proper divisors (55619568).

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

22375440 is a wasteful number, since it uses less digits than its factorization.

22375440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 22375440 is about 4730.2684913227. The cubic root of 22375440 is about 281.7888868108.

The spelling of 22375440 in words is "twenty-two million, three hundred seventy-five thousand, four hundred forty".