20993298 has 16 divisors (see below), whose sum is σ = 42145920. Its totient is φ = 6971216.

The previous prime is 20993281. The next prime is 20993339. The reversal of 20993298 is 89239902.

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, 4890 + ... + 8117.

It is an arithmetic number, because the mean of its divisors is an integer number (2634120).

Almost surely, 2^20993298 is an apocalyptic number.

20993298 is an abundant number, since it is smaller than the sum of its proper divisors (21152622).

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

20993298 is a wasteful number, since it uses less digits than its factorization.

20993298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 20993298 is about 4581.8443884532. The cubic root of 20993298 is about 275.8630648172.

The spelling of 20993298 in words is "twenty million, nine hundred ninety-three thousand, two hundred ninety-eight".