20296980 has 240 divisors, whose sum is σ = 74644416. Its totient is φ = 4561920.

The previous prime is 20296973. The next prime is 20296981. The reversal of 20296980 is 8969202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20296981) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 302907 + ... + 302973.

Almost surely, 2^20296980 is an apocalyptic number.

20296980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20296980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37322208).

20296980 is an abundant number, since it is smaller than the sum of its proper divisors (54347436).

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

20296980 is a wasteful number, since it uses less digits than its factorization.

20296980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 20296980 is about 4505.2169759069. The cubic root of 20296980 is about 272.7787121155.

It can be divided in two parts, 2029 and 6980, that added together give a palindrome (9009).

The spelling of 20296980 in words is "twenty million, two hundred ninety-six thousand, nine hundred eighty".