20323977 has 8 divisors (see below), whose sum is σ = 28524960. Its totient is φ = 12836160.

The previous prime is 20323969. The next prime is 20323999. The reversal of 20323977 is 77932302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20323977 - 2³ = 20323969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20323957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178224 + ... + 178337.

It is an arithmetic number, because the mean of its divisors is an integer number (3565620).

Almost surely, 2^20323977 is an apocalyptic number.

It is an amenable number.

20323977 is a deficient number, since it is larger than the sum of its proper divisors (8200983).

20323977 is a wasteful number, since it uses less digits than its factorization.

20323977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356583.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 20323977 is about 4508.2121733565. The cubic root of 20323977 is about 272.8995994636.

The spelling of 20323977 in words is "twenty million, three hundred twenty-three thousand, nine hundred seventy-seven".