22850640 has 160 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 5967360.

The previous prime is 22850629. The next prime is 22850657. The reversal of 22850640 is 4605822.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153286 + ... + 153434.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^22850640 is an apocalyptic number.

22850640 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 22850640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176000).

22850640 is an abundant number, since it is smaller than the sum of its proper divisors (57501360).

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

22850640 is a wasteful number, since it uses less digits than its factorization.

22850640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22850640 is about 4780.2343038809. The cubic root of 22850640 is about 283.7697664560.

The spelling of 22850640 in words is "twenty-two million, eight hundred fifty thousand, six hundred forty".