22831540 has 24 divisors (see below), whose sum is σ = 50470560. Its totient is φ = 8651808.

The previous prime is 22831517. The next prime is 22831619. The reversal of 22831540 is 4513822.

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, 29662 + ... + 30421.

It is an arithmetic number, because the mean of its divisors is an integer number (2102940).

Almost surely, 2^22831540 is an apocalyptic number.

22831540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22831540 is an abundant number, since it is smaller than the sum of its proper divisors (27639020).

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

22831540 is a wasteful number, since it uses less digits than its factorization.

22831540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60111 (or 60109 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22831540 is about 4778.2360762106. The cubic root of 22831540 is about 283.6906802194.

The spelling of 22831540 in words is "twenty-two million, eight hundred thirty-one thousand, five hundred forty".