22074690 has 64 divisors (see below), whose sum is σ = 58309632. Its totient is φ = 5304000.

The previous prime is 22074643. The next prime is 22074719. The reversal of 22074690 is 9647022.

It is a happy number.

22074690 is a nontrivial binomial coefficient, being equal to C(6645, 2).

It is a super-2 number, since 2×22074690² = 974583877192200, which contains 22 as substring.

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

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49609 + ... + 50051.

It is an arithmetic number, because the mean of its divisors is an integer number (911088).

Almost surely, 2^22074690 is an apocalyptic number.

22074690 is the 6644-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22074690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29154816).

22074690 is an abundant number, since it is smaller than the sum of its proper divisors (36234942).

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

22074690 is a wasteful number, since it uses less digits than its factorization.

22074690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 22074690 is about 4698.3709942915. The cubic root of 22074690 is about 280.5206723431.

The spelling of 22074690 in words is "twenty-two million, seventy-four thousand, six hundred ninety".