20652642 has 24 divisors (see below), whose sum is σ = 45789744. Its totient is φ = 6723864.

The previous prime is 20652629. The next prime is 20652647. The reversal of 20652642 is 24625602.

20652642 is a `hidden beast` number, since 2 + 0 + 652 + 6 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (20652647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12568 + ... + 14115.

It is an arithmetic number, because the mean of its divisors is an integer number (1907906).

Almost surely, 2^20652642 is an apocalyptic number.

20652642 is an abundant number, since it is smaller than the sum of its proper divisors (25137102).

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

20652642 is a wasteful number, since it uses less digits than its factorization.

20652642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26734 (or 26731 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20652642 is about 4544.5177962024. The cubic root of 20652642 is about 274.3627868883.

The spelling of 20652642 in words is "twenty million, six hundred fifty-two thousand, six hundred forty-two".