20298772 has 24 divisors (see below), whose sum is σ = 39192552. Its totient is φ = 9139200.

The previous prime is 20298767. The next prime is 20298781. The reversal of 20298772 is 27789202.

It can be written as a sum of positive squares in 4 ways, for example, as 264196 + 20034576 = 514^2 + 4476^2 .

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, 2629 + ... + 6892.

It is an arithmetic number, because the mean of its divisors is an integer number (1633023).

Almost surely, 2^20298772 is an apocalyptic number.

It is an amenable number.

20298772 is a deficient number, since it is larger than the sum of its proper divisors (18893780).

20298772 is a wasteful number, since it uses less digits than its factorization.

20298772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9579 (or 9577 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 20298772 is about 4505.4158520607. The cubic root of 20298772 is about 272.7867396656.

It can be divided in two parts, 2029 and 8772, that added together give a palindrome (10801).

The spelling of 20298772 in words is "twenty million, two hundred ninety-eight thousand, seven hundred seventy-two".