20795616 has 120 divisors (see below), whose sum is σ = 62569584. Its totient is φ = 6773760.

The previous prime is 20795609. The next prime is 20795623. The reversal of 20795616 is 61659702.

20795616 = T₃₁₁ + T₃₁₂ + ... + T₅₃₆.

20795616 is a `hidden beast` number, since 20 + 79 + 561 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (20795609) and next prime (20795623).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 in 19 ways as a sum of consecutive naturals, for example, 183976 + ... + 184088.

Almost surely, 2^20795616 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 20795616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31284792).

20795616 is an abundant number, since it is smaller than the sum of its proper divisors (41773968).

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

20795616 is a wasteful number, since it uses less digits than its factorization.

20795616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 20795616 is about 4560.2210472739. The cubic root of 20795616 is about 274.9944505767.

The spelling of 20795616 in words is "twenty million, seven hundred ninety-five thousand, six hundred sixteen".