22757940 has 36 divisors (see below), whose sum is σ = 69032964. Its totient is φ = 6068736.

The previous prime is 22757939. The next prime is 22757989. The reversal of 22757940 is 4975722.

It can be written as a sum of positive squares in 2 ways, for example, as 13972644 + 8785296 = 3738^2 + 2964^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22757895 and 22757904.

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 11 ways as a sum of consecutive naturals, for example, 63037 + ... + 63396.

Almost surely, 2^22757940 is an apocalyptic number.

22757940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22757940 is an abundant number, since it is smaller than the sum of its proper divisors (46275024).

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

22757940 is a wasteful number, since it uses less digits than its factorization.

22757940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126448 (or 126443 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 22757940 is about 4770.5282726340. The cubic root of 22757940 is about 283.3855159558.

The spelling of 22757940 in words is "twenty-two million, seven hundred fifty-seven thousand, nine hundred forty".