20353956 has 24 divisors (see below), whose sum is σ = 54277440. Its totient is φ = 5815392.

The previous prime is 20353939. The next prime is 20353967. The reversal of 20353956 is 65935302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121071 + ... + 121238.

It is an arithmetic number, because the mean of its divisors is an integer number (2261560).

Almost surely, 2^20353956 is an apocalyptic number.

It is an amenable number.

20353956 is an abundant number, since it is smaller than the sum of its proper divisors (33923484).

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

20353956 is a wasteful number, since it uses less digits than its factorization.

20353956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242323 (or 242321 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 20353956 is about 4511.5358803849. The cubic root of 20353956 is about 273.0337142546.

The spelling of 20353956 in words is "twenty million, three hundred fifty-three thousand, nine hundred fifty-six".