20324961 has 6 divisors (see below), whose sum is σ = 29358290. Its totient is φ = 13549968.

The previous prime is 20324929. The next prime is 20324987. The reversal of 20324961 is 16942302.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 8381025 = 3456^2 + 2895^2 .

It is not a de Polignac number, because 20324961 - 2⁵ = 20324929 is a prime.

It is a super-4 number, since 4×20324961⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20324921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1129156 + ... + 1129173.

Almost surely, 2^20324961 is an apocalyptic number.

It is an amenable number.

20324961 is a deficient number, since it is larger than the sum of its proper divisors (9033329).

20324961 is a wasteful number, since it uses less digits than its factorization.

20324961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258335 (or 2258332 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20324961 is about 4508.3213062070. The cubic root of 20324961 is about 272.9040036028.

The spelling of 20324961 in words is "twenty million, three hundred twenty-four thousand, nine hundred sixty-one".