20150656 has 16 divisors (see below), whose sum is σ = 40144140. Its totient is φ = 10075264.

The previous prime is 20150633. The next prime is 20150677. The reversal of 20150656 is 65605102.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 20150656.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 78586 + ... + 78841.

Almost surely, 2^20150656 is an apocalyptic number.

It is an amenable number.

20150656 is a deficient number, since it is larger than the sum of its proper divisors (19993484).

20150656 is an equidigital number, since it uses as much as digits as its factorization.

20150656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157441 (or 157429 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 20150656 is about 4488.9482064288. The cubic root of 20150656 is about 272.1216295708.

Adding to 20150656 its reverse (65605102), we get a palindrome (85755758).

The spelling of 20150656 in words is "twenty million, one hundred fifty thousand, six hundred fifty-six".