20007956 has 12 divisors (see below), whose sum is σ = 35354592. Its totient is φ = 9906648.

The previous prime is 20007919. The next prime is 20007971. The reversal of 20007956 is 65970002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23870 + ... + 24693.

It is an arithmetic number, because the mean of its divisors is an integer number (2946216).

Almost surely, 2^20007956 is an apocalyptic number.

It is an amenable number.

20007956 is a deficient number, since it is larger than the sum of its proper divisors (15346636).

20007956 is a wasteful number, since it uses less digits than its factorization.

20007956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48670 (or 48668 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 20007956 is about 4473.0253743971. The cubic root of 20007956 is about 271.4777500654.

Adding to 20007956 its reverse (65970002), we get a palindrome (85977958).

The spelling of 20007956 in words is "twenty million, seven thousand, nine hundred fifty-six".