20329056 has 240 divisors, whose sum is σ = 70253568. Its totient is φ = 5702400.

The previous prime is 20329013. The next prime is 20329061. The reversal of 20329056 is 65092302.

It is a super-2 number, since 2×20329056² = 826541035702272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 655761 + ... + 655791.

Almost surely, 2^20329056 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 20329056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35126784).

20329056 is an abundant number, since it is smaller than the sum of its proper divisors (49924512).

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

20329056 is a wasteful number, since it uses less digits than its factorization.

20329056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20329056 is about 4508.7754435101. The cubic root of 20329056 is about 272.9223302776.

The spelling of 20329056 in words is "twenty million, three hundred twenty-nine thousand, fifty-six".