20674080 has 216 divisors, whose sum is σ = 82348812. Its totient is φ = 4709376.

The previous prime is 20674067. The next prime is 20674133. The reversal of 20674080 is 8047602.

It can be written as a sum of positive squares in 2 ways, for example, as 19820304 + 853776 = 4452^2 + 924^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70414 + ... + 70706.

Almost surely, 2^20674080 is an apocalyptic number.

20674080 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 20674080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41174406).

20674080 is an abundant number, since it is smaller than the sum of its proper divisors (61674732).

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

20674080 is a wasteful number, since it uses less digits than its factorization.

20674080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20674080 is about 4546.8758505154. The cubic root of 20674080 is about 274.4576860533.

The spelling of 20674080 in words is "twenty million, six hundred seventy-four thousand, eighty".