494921880 has 256 divisors, whose sum is σ = 1762560000. Its totient is φ = 123171840.

The previous prime is 494921863. The next prime is 494921881. The reversal of 494921880 is 88129494.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494921881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1826145 + ... + 1826415.

It is an arithmetic number, because the mean of its divisors is an integer number (6885000).

Almost surely, 2^494921880 is an apocalyptic number.

494921880 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 494921880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881280000).

494921880 is an abundant number, since it is smaller than the sum of its proper divisors (1267638120).

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

494921880 is a wasteful number, since it uses less digits than its factorization.

494921880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 494921880 is about 22246.8397755726. The cubic root of 494921880 is about 791.0043733439.

The spelling of 494921880 in words is "four hundred ninety-four million, nine hundred twenty-one thousand, eight hundred eighty".