20998344 has 32 divisors (see below), whose sum is σ = 55260000. Its totient is φ = 6630912.

The previous prime is 20998303. The next prime is 20998387. The reversal of 20998344 is 44389902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22569 + ... + 23480.

It is an arithmetic number, because the mean of its divisors is an integer number (1726875).

Almost surely, 2^20998344 is an apocalyptic number.

20998344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20998344 is an abundant number, since it is smaller than the sum of its proper divisors (34261656).

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

20998344 is a wasteful number, since it uses less digits than its factorization.

20998344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46077 (or 46073 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 20998344 is about 4582.3950069805. The cubic root of 20998344 is about 275.8851654182.

The spelling of 20998344 in words is "twenty million, nine hundred ninety-eight thousand, three hundred forty-four".