22113780 has 48 divisors (see below), whose sum is σ = 66683904. Its totient is φ = 5443200.

The previous prime is 22113733. The next prime is 22113803. The reversal of 22113780 is 8731122.

It is a self number, because there is not a number n which added to its sum of digits gives 22113780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13396 + ... + 14955.

It is an arithmetic number, because the mean of its divisors is an integer number (1389248).

Almost surely, 2^22113780 is an apocalyptic number.

22113780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22113780 is an abundant number, since it is smaller than the sum of its proper divisors (44570124).

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

22113780 is a wasteful number, since it uses less digits than its factorization.

22113780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28376 (or 28374 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 22113780 is about 4702.5291067680. The cubic root of 22113780 is about 280.6861572917.

The spelling of 22113780 in words is "twenty-two million, one hundred thirteen thousand, seven hundred eighty".