485191800 has 144 divisors (see below), whose sum is σ = 1645884240. Its totient is φ = 128079360.

The previous prime is 485191789. The next prime is 485191813. The reversal of 485191800 is 8191584.

It is a super-2 number, since 2×485191800² = 470822165574480000, which contains 22 as substring.

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

It is a congruent number.

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, 184092 + ... + 186708.

Almost surely, 2^485191800 is an apocalyptic number.

485191800 is a gapful number since it is divisible by the number (40) 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 485191800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822942120).

485191800 is an abundant number, since it is smaller than the sum of its proper divisors (1160692440).

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

485191800 is a wasteful number, since it uses less digits than its factorization.

485191800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 485191800 is about 22027.0697097912. The cubic root of 485191800 is about 785.7863568679.

The spelling of 485191800 in words is "four hundred eighty-five million, one hundred ninety-one thousand, eight hundred".