890284720 has 40 divisors (see below), whose sum is σ = 2229138576. Its totient is φ = 328720128.

The previous prime is 890284697. The next prime is 890284727. The reversal of 890284720 is 27482098.

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

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (890284727) 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, 426982 + ... + 429061.

Almost surely, 2^890284720 is an apocalyptic number.

890284720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

890284720 is an abundant number, since it is smaller than the sum of its proper divisors (1338853856).

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

890284720 is a wasteful number, since it uses less digits than its factorization.

890284720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856069 (or 856063 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 890284720 is about 29837.6393168092. The cubic root of 890284720 is about 962.0027345355.

The spelling of 890284720 in words is "eight hundred ninety million, two hundred eighty-four thousand, seven hundred twenty".