20295520 has 48 divisors (see below), whose sum is σ = 54800928. Its totient is φ = 6958080.

The previous prime is 20295491. The next prime is 20295523. The reversal of 20295520 is 2559202.

It is a super-3 number, since 3×20295520³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20295523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7941 + ... + 10180.

It is an arithmetic number, because the mean of its divisors is an integer number (1141686).

Almost surely, 2^20295520 is an apocalyptic number.

20295520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20295520 is an abundant number, since it is smaller than the sum of its proper divisors (34505408).

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

20295520 is a wasteful number, since it uses less digits than its factorization.

20295520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18143 (or 18135 counting only the distinct ones).

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

The square root of 20295520 is about 4505.0549386217. The cubic root of 20295520 is about 272.7721714632.

The spelling of 20295520 in words is "twenty million, two hundred ninety-five thousand, five hundred twenty".