20295616 has 56 divisors (see below), whose sum is σ = 44476416. Its totient is φ = 9112320.

The previous prime is 20295599. The next prime is 20295623. The reversal of 20295616 is 61659202.

It is a congruent number.

It is an unprimeable number.

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, 89295 + ... + 89521.

Almost surely, 2^20295616 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 20295616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22238208).

20295616 is an abundant number, since it is smaller than the sum of its proper divisors (24180800).

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

20295616 is a wasteful number, since it uses less digits than its factorization.

20295616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 20295616 is about 4505.0655933072. The cubic root of 20295616 is about 272.7726015431.

The spelling of 20295616 in words is "twenty million, two hundred ninety-five thousand, six hundred sixteen".