22636380 has 48 divisors (see below), whose sum is σ = 68259744. Its totient is φ = 5571840.

The previous prime is 22636379. The next prime is 22636381. The reversal of 22636380 is 8363622.

It is an interprime number because it is at equal distance from previous prime (22636379) and next prime (22636381).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22636381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13731 + ... + 15290.

It is an arithmetic number, because the mean of its divisors is an integer number (1422078).

Almost surely, 2^22636380 is an apocalyptic number.

22636380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22636380 is an abundant number, since it is smaller than the sum of its proper divisors (45623364).

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

22636380 is a wasteful number, since it uses less digits than its factorization.

22636380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29046 (or 29044 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 22636380 is about 4757.7704862677. The cubic root of 22636380 is about 282.8800533864.

The spelling of 22636380 in words is "twenty-two million, six hundred thirty-six thousand, three hundred eighty".