898423820 has 72 divisors (see below), whose sum is σ = 2323865376. Its totient is φ = 289906176.

The previous prime is 898423817. The next prime is 898423831. The reversal of 898423820 is 28324898.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10304 + ... + 43623.

It is an arithmetic number, because the mean of its divisors is an integer number (32275908).

Almost surely, 2^898423820 is an apocalyptic number.

It is an amenable number.

898423820 is an abundant number, since it is smaller than the sum of its proper divisors (1425441556).

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

898423820 is a wasteful number, since it uses less digits than its factorization.

898423820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53967 (or 53958 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 898423820 is about 29973.7188216611. The cubic root of 898423820 is about 964.9254311624.

The spelling of 898423820 in words is "eight hundred ninety-eight million, four hundred twenty-three thousand, eight hundred twenty".