20989302 has 16 divisors (see below), whose sum is σ = 42258432. Its totient is φ = 6949800.

The previous prime is 20989279. The next prime is 20989313. The reversal of 20989302 is 20398902.

It is a congruent number.

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, 10678 + ... + 12489.

It is an arithmetic number, because the mean of its divisors is an integer number (2641152).

Almost surely, 2^20989302 is an apocalyptic number.

20989302 is an abundant number, since it is smaller than the sum of its proper divisors (21269130).

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

20989302 is a wasteful number, since it uses less digits than its factorization.

20989302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23323.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 20989302 is about 4581.4082987658. The cubic root of 20989302 is about 275.8455605204.

The spelling of 20989302 in words is "twenty million, nine hundred eighty-nine thousand, three hundred two".