22404442690 has 64 divisors (see below), whose sum is σ = 47198536704. Its totient is φ = 7497520128.

The previous prime is 22404442673. The next prime is 22404442691. The reversal of 22404442690 is 9624440422.

It is a happy number.

It is a super-2 number, since 2×22404442690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22404442691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1218042 + ... + 1236298.

It is an arithmetic number, because the mean of its divisors is an integer number (737477136).

Almost surely, 2^22404442690 is an apocalyptic number.

22404442690 is an abundant number, since it is smaller than the sum of its proper divisors (24794094014).

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

22404442690 is a wasteful number, since it uses less digits than its factorization.

22404442690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18691.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 22404442690 in words is "twenty-two billion, four hundred four million, four hundred forty-two thousand, six hundred ninety".