22763780 has 24 divisors (see below), whose sum is σ = 51481752. Its totient is φ = 8404992.

The previous prime is 22763759. The next prime is 22763789. The reversal of 22763780 is 8736722.

It can be written as a sum of positive squares in 4 ways, for example, as 1658944 + 21104836 = 1288^2 + 4594^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22763780.

It is not an unprimeable number, because it can be changed into a prime (22763789) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 43517 + ... + 44036.

It is an arithmetic number, because the mean of its divisors is an integer number (2145073).

Almost surely, 2^22763780 is an apocalyptic number.

22763780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22763780 is an abundant number, since it is smaller than the sum of its proper divisors (28717972).

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

22763780 is a wasteful number, since it uses less digits than its factorization.

22763780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87575 (or 87573 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22763780 is about 4771.1403249119. The cubic root of 22763780 is about 283.4097540880.

The spelling of 22763780 in words is "twenty-two million, seven hundred sixty-three thousand, seven hundred eighty".