20964898 has 4 divisors (see below), whose sum is σ = 31447350. Its totient is φ = 10482448.

The previous prime is 20964877. The next prime is 20964917. The reversal of 20964898 is 89846902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19918369 + 1046529 = 4463^2 + 1023^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5241223 + ... + 5241226.

Almost surely, 2^20964898 is an apocalyptic number.

20964898 is a deficient number, since it is larger than the sum of its proper divisors (10482452).

20964898 is a wasteful number, since it uses less digits than its factorization.

20964898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10482451.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 20964898 is about 4578.7441509654. The cubic root of 20964898 is about 275.7386116612.

The spelling of 20964898 in words is "twenty million, nine hundred sixty-four thousand, eight hundred ninety-eight".