22953240 has 128 divisors (see below), whose sum is σ = 78148800. Its totient is φ = 5990400.

The previous prime is 22953221. The next prime is 22953253. The reversal of 22953240 is 4235922.

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 (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57040 + ... + 57440.

Almost surely, 2^22953240 is an apocalyptic number.

22953240 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 22953240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39074400).

22953240 is an abundant number, since it is smaller than the sum of its proper divisors (55195560).

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

22953240 is a wasteful number, since it uses less digits than its factorization.

22953240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 22953240 is about 4790.9539759843. The cubic root of 22953240 is about 284.1938437251.

The spelling of 22953240 in words is "twenty-two million, nine hundred fifty-three thousand, two hundred forty".