22360140 has 144 divisors (see below), whose sum is σ = 77366016. Its totient is φ = 5174400.

The previous prime is 22360139. The next prime is 22360147. The reversal of 22360140 is 4106322.

It is a happy number.

22360140 is a `hidden beast` number, since 2 + 23 + 601 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22360147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45295 + ... + 45785.

It is an arithmetic number, because the mean of its divisors is an integer number (537264).

Almost surely, 2^22360140 is an apocalyptic number.

22360140 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 22360140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38683008).

22360140 is an abundant number, since it is smaller than the sum of its proper divisors (55005876).

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

22360140 is a wasteful number, since it uses less digits than its factorization.

22360140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22360140 is about 4728.6509704143. The cubic root of 22360140 is about 281.7246444536.

Adding to 22360140 its reverse (4106322), we get a palindrome (26466462).

It can be divided in two parts, 22360 and 140, that added together give a square (22500 = 150²).

The spelling of 22360140 in words is "twenty-two million, three hundred sixty thousand, one hundred forty".