22140054 has 40 divisors (see below), whose sum is σ = 52228440. Its totient is φ = 6990624.

The previous prime is 22140049. The next prime is 22140071. The reversal of 22140054 is 45004122.

It is a super-2 number, since 2×22140054² = 980363982245832, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 519 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (1305711).

Almost surely, 2^22140054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22140054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26114220).

22140054 is an abundant number, since it is smaller than the sum of its proper divisors (30088386).

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

22140054 is a wasteful number, since it uses less digits than its factorization.

22140054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7226 (or 7217 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22140054 is about 4705.3218805944. The cubic root of 22140054 is about 280.7972769843.

Adding to 22140054 its reverse (45004122), we get a palindrome (67144176).

The spelling of 22140054 in words is "twenty-two million, one hundred forty thousand, fifty-four".