494172840 has 192 divisors, whose sum is σ = 1736812800. Its totient is φ = 112154112.

The previous prime is 494172827. The next prime is 494172857. The reversal of 494172840 is 48271494.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1346337 + ... + 1346703.

It is an arithmetic number, because the mean of its divisors is an integer number (9045900).

Almost surely, 2^494172840 is an apocalyptic number.

494172840 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 494172840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868406400).

494172840 is an abundant number, since it is smaller than the sum of its proper divisors (1242639960).

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

494172840 is a wasteful number, since it uses less digits than its factorization.

494172840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 494172840 is about 22229.9986504723. The cubic root of 494172840 is about 790.6051230819.

The spelling of 494172840 in words is "four hundred ninety-four million, one hundred seventy-two thousand, eight hundred forty".