28490807418 has 16 divisors (see below), whose sum is σ = 56995007616. Its totient is φ = 9494703680.

The previous prime is 28490807417. The next prime is 28490807447. The reversal of 28490807418 is 81470809482.

It is a super-2 number, since 2×28490807418² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28490807417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530271 + ... + 581522.

It is an arithmetic number, because the mean of its divisors is an integer number (3562187976).

Almost surely, 2^28490807418 is an apocalyptic number.

28490807418 is an abundant number, since it is smaller than the sum of its proper divisors (28504200198).

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

28490807418 is a wasteful number, since it uses less digits than its factorization.

28490807418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116069.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 28490807418 in words is "twenty-eight billion, four hundred ninety million, eight hundred seven thousand, four hundred eighteen".