20974337 has 8 divisors (see below), whose sum is σ = 21748800. Its totient is φ = 20203344.

The previous prime is 20974333. The next prime is 20974357. The reversal of 20974337 is 73347902.

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

It is a cyclic number.

It is not a de Polignac number, because 20974337 - 2² = 20974333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20974297 and 20974306.

It is not an unprimeable number, because it can be changed into a prime (20974333) 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, 22364 + ... + 23282.

It is an arithmetic number, because the mean of its divisors is an integer number (2718600).

Almost surely, 2^20974337 is an apocalyptic number.

It is an amenable number.

20974337 is a deficient number, since it is larger than the sum of its proper divisors (774463).

20974337 is an equidigital number, since it uses as much as digits as its factorization.

20974337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 20974337 is about 4579.7747761216. The cubic root of 20974337 is about 275.7799872699.

The spelling of 20974337 in words is "twenty million, nine hundred seventy-four thousand, three hundred thirty-seven".