22538142040 has 64 divisors (see below), whose sum is σ = 52977576960. Its totient is φ = 8619288960.

The previous prime is 22538142031. The next prime is 22538142047. The reversal of 22538142040 is 4024183522.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 22538141993 and 22538142011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22538142047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6574 + ... + 212413.

It is an arithmetic number, because the mean of its divisors is an integer number (827774640).

Almost surely, 2^22538142040 is an apocalyptic number.

22538142040 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 22538142040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26488788480).

22538142040 is an abundant number, since it is smaller than the sum of its proper divisors (30439434920).

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

22538142040 is a wasteful number, since it uses less digits than its factorization.

22538142040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219112 (or 219108 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 22538142040 in words is "twenty-two billion, five hundred thirty-eight million, one hundred forty-two thousand, forty".