22173140 has 24 divisors (see below), whose sum is σ = 50797152. Its totient is φ = 8062880.

The previous prime is 22173131. The next prime is 22173157. The reversal of 22173140 is 4137122.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 50174 + ... + 50613.

It is an arithmetic number, because the mean of its divisors is an integer number (2116548).

Almost surely, 2^22173140 is an apocalyptic number.

22173140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22173140 is an abundant number, since it is smaller than the sum of its proper divisors (28624012).

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

22173140 is a wasteful number, since it uses less digits than its factorization.

22173140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100807 (or 100805 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 22173140 is about 4708.8363743074. The cubic root of 22173140 is about 280.9370814412.

The spelling of 22173140 in words is "twenty-two million, one hundred seventy-three thousand, one hundred forty".