20974033 has 8 divisors (see below), whose sum is σ = 21293280. Its totient is φ = 20657280.

The previous prime is 20974021. The next prime is 20974049. The reversal of 20974033 is 33047902.

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 20974033 - 2⁹ = 20973521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20973992 and 20974010.

It is not an unprimeable number, because it can be changed into a prime (20974013) 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, 22113 + ... + 23041.

It is an arithmetic number, because the mean of its divisors is an integer number (2661660).

Almost surely, 2^20974033 is an apocalyptic number.

It is an amenable number.

20974033 is a deficient number, since it is larger than the sum of its proper divisors (319247).

20974033 is a wasteful number, since it uses less digits than its factorization.

20974033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 20974033 is about 4579.7415865963. The cubic root of 20974033 is about 275.7786548873.

The spelling of 20974033 in words is "twenty million, nine hundred seventy-four thousand, thirty-three".