22890690042 has 32 divisors (see below), whose sum is σ = 49998518784. Its totient is φ = 6928906800.

The previous prime is 22890690041. The next prime is 22890690071. The reversal of 22890690042 is 24009609822.

It is a junction number, because it is equal to n+sod(n) for n = 22890689976 and 22890690003.

It is not an unprimeable number, because it can be changed into a prime (22890690041) 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, 131334 + ... + 251057.

It is an arithmetic number, because the mean of its divisors is an integer number (1562453712).

Almost surely, 2^22890690042 is an apocalyptic number.

22890690042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22890690042 is an abundant number, since it is smaller than the sum of its proper divisors (27107828742).

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

22890690042 is a wasteful number, since it uses less digits than its factorization.

22890690042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383314.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 22890690042 in words is "twenty-two billion, eight hundred ninety million, six hundred ninety thousand, forty-two".