1617020080 has 240 divisors, whose sum is σ = 4405030560. Its totient is φ = 548425728.

The previous prime is 1617020011. The next prime is 1617020131. The reversal of 1617020080 is 800207161.

It is a super-2 number, since 2×1617020080² = 5229507878246412800, 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 47 ways as a sum of consecutive naturals, for example, 22150924 + ... + 22150996.

It is an arithmetic number, because the mean of its divisors is an integer number (18354294).

Almost surely, 2^1617020080 is an apocalyptic number.

1617020080 is a gapful number since it is divisible by the number (10) 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 1617020080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202515280).

1617020080 is an abundant number, since it is smaller than the sum of its proper divisors (2788010480).

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

1617020080 is a wasteful number, since it uses less digits than its factorization.

1617020080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1617020080 is about 40212.1882020862. The cubic root of 1617020080 is about 1173.7397273673.

The spelling of 1617020080 in words is "one billion, six hundred seventeen million, twenty thousand, eighty".