20649294 has 12 divisors (see below), whose sum is σ = 44740176. Its totient is φ = 6883092.

The previous prime is 20649289. The next prime is 20649313. The reversal of 20649294 is 49294602.

20649294 is a `hidden beast` number, since 2 + 0 + 649 + 2 + 9 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 573574 + ... + 573609.

It is an arithmetic number, because the mean of its divisors is an integer number (3728348).

Almost surely, 2^20649294 is an apocalyptic number.

20649294 is an abundant number, since it is smaller than the sum of its proper divisors (24090882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20649294 is a wasteful number, since it uses less digits than its factorization.

20649294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147191 (or 1147188 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20649294 is about 4544.1494253600. The cubic root of 20649294 is about 274.3479604357.

The spelling of 20649294 in words is "twenty million, six hundred forty-nine thousand, two hundred ninety-four".