20774937 has 8 divisors (see below), whose sum is σ = 27945504. Its totient is φ = 13727168.

The previous prime is 20774927. The next prime is 20774939. The reversal of 20774937 is 73947702.

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 20774937 - 2¹⁴ = 20758553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20774895 and 20774904.

It is not an unprimeable number, because it can be changed into a prime (20774939) 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, 30303 + ... + 30980.

It is an arithmetic number, because the mean of its divisors is an integer number (3493188).

Almost surely, 2^20774937 is an apocalyptic number.

It is an amenable number.

20774937 is a deficient number, since it is larger than the sum of its proper divisors (7170567).

20774937 is a wasteful number, since it uses less digits than its factorization.

20774937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61399.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 20774937 is about 4557.9531590397. The cubic root of 20774937 is about 274.9032695606.

The spelling of 20774937 in words is "twenty million, seven hundred seventy-four thousand, nine hundred thirty-seven".