20295456 has 48 divisors (see below), whose sum is σ = 53643744. Its totient is φ = 6718464.

The previous prime is 20295427. The next prime is 20295479. The reversal of 20295456 is 65459202.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 15000 + ... + 16296.

It is an arithmetic number, because the mean of its divisors is an integer number (1117578).

Almost surely, 2^20295456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20295456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26821872).

20295456 is an abundant number, since it is smaller than the sum of its proper divisors (33348288).

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

20295456 is a wasteful number, since it uses less digits than its factorization.

20295456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 20295456 is about 4505.0478354841. The cubic root of 20295456 is about 272.7718847425.

The spelling of 20295456 in words is "twenty million, two hundred ninety-five thousand, four hundred fifty-six".