22361790 has 32 divisors (see below), whose sum is σ = 58548096. Its totient is φ = 5420960.

The previous prime is 22361789. The next prime is 22361791. The reversal of 22361790 is 9716322.

It is an interprime number because it is at equal distance from previous prime (22361789) and next prime (22361791).

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 (22361791) 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, 33552 + ... + 34211.

It is an arithmetic number, because the mean of its divisors is an integer number (1829628).

Almost surely, 2^22361790 is an apocalyptic number.

22361790 is an abundant number, since it is smaller than the sum of its proper divisors (36186306).

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

22361790 is a wasteful number, since it uses less digits than its factorization.

22361790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67784.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 22361790 is about 4728.8254355601. The cubic root of 22361790 is about 281.7315739605.

The spelling of 22361790 in words is "twenty-two million, three hundred sixty-one thousand, seven hundred ninety".