22847540 has 24 divisors (see below), whose sum is σ = 48640200. Its totient is φ = 9013248.

The previous prime is 22847509. The next prime is 22847549. The reversal of 22847540 is 4574822.

It can be written as a sum of positive squares in 4 ways, for example, as 682276 + 22165264 = 826^2 + 4708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22847497 and 22847506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22847549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6365 + ... + 9284.

It is an arithmetic number, because the mean of its divisors is an integer number (2026675).

Almost surely, 2^22847540 is an apocalyptic number.

22847540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22847540 is an abundant number, since it is smaller than the sum of its proper divisors (25792660).

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

22847540 is a wasteful number, since it uses less digits than its factorization.

22847540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15731 (or 15729 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 22847540 is about 4779.9100409945. The cubic root of 22847540 is about 283.7569334667.

The spelling of 22847540 in words is "twenty-two million, eight hundred forty-seven thousand, five hundred forty".