20746413 has 12 divisors (see below), whose sum is σ = 30390048. Its totient is φ = 13635720.

The previous prime is 20746393. The next prime is 20746417. The reversal of 20746413 is 31464702.

20746413 is a `hidden beast` number, since 207 + 46 + 413 = 666.

It is not a de Polignac number, because 20746413 - 2²⁰ = 19697837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15595 + ... + 16872.

It is an arithmetic number, because the mean of its divisors is an integer number (2532504).

Almost surely, 2^20746413 is an apocalyptic number.

It is an amenable number.

20746413 is a deficient number, since it is larger than the sum of its proper divisors (9643635).

20746413 is a wasteful number, since it uses less digits than its factorization.

20746413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32544 (or 32541 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20746413 is about 4554.8230481546. The cubic root of 20746413 is about 274.7773978219. Note that the first 3 decimals are identical.

The spelling of 20746413 in words is "twenty million, seven hundred forty-six thousand, four hundred thirteen".