11398890528 has 72 divisors (see below), whose sum is σ = 33824988288. Its totient is φ = 3634426752.

The previous prime is 11398890527. The next prime is 11398890553. The reversal of 11398890528 is 82509889311.

11398890528 is a `hidden beast` number, since 1 + 1 + 39 + 8 + 89 + 0 + 528 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×11398890528³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11398890521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853800 + ... + 867047.

It is an arithmetic number, because the mean of its divisors is an integer number (469791504).

Almost surely, 2^11398890528 is an apocalyptic number.

11398890528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11398890528 is an abundant number, since it is smaller than the sum of its proper divisors (22426097760).

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

11398890528 is a wasteful number, since it uses less digits than its factorization.

11398890528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720886 (or 1720875 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 11398890528 in words is "eleven billion, three hundred ninety-eight million, eight hundred ninety thousand, five hundred twenty-eight".