20719056 has 40 divisors (see below), whose sum is σ = 56674944. Its totient is φ = 6499840.

The previous prime is 20719019. The next prime is 20719087. The reversal of 20719056 is 65091702.

It is a super-2 number, since 2×20719056² = 858558563062272, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 11880 + ... + 13511.

Almost surely, 2^20719056 is an apocalyptic number.

It is an amenable number.

20719056 is an abundant number, since it is smaller than the sum of its proper divisors (35955888).

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

20719056 is a wasteful number, since it uses less digits than its factorization.

20719056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25419 (or 25413 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 20719056 is about 4551.8189770684. The cubic root of 20719056 is about 274.6565674275.

The spelling of 20719056 in words is "twenty million, seven hundred nineteen thousand, fifty-six".