890388880 has 40 divisors (see below), whose sum is σ = 2160165312. Its totient is φ = 340669824.

The previous prime is 890388871. The next prime is 890388881. The reversal of 890388880 is 88883098.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (890388881) 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, 240114 + ... + 243793.

Almost surely, 2^890388880 is an apocalyptic number.

890388880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

890388880 is an abundant number, since it is smaller than the sum of its proper divisors (1269776432).

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

890388880 is a wasteful number, since it uses less digits than its factorization.

890388880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483943 (or 483937 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 52.

The square root of 890388880 is about 29839.3847121552. The cubic root of 890388880 is about 962.0402499861.

The spelling of 890388880 in words is "eight hundred ninety million, three hundred eighty-eight thousand, eight hundred eighty".