494557920 has 192 divisors, whose sum is σ = 1741824000. Its totient is φ = 131056128.

The previous prime is 494557871. The next prime is 494557951. The reversal of 494557920 is 29755494.

494557920 is a `hidden beast` number, since 4 + 9 + 4 + 557 + 92 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1032241 + ... + 1032719.

It is an arithmetic number, because the mean of its divisors is an integer number (9072000).

Almost surely, 2^494557920 is an apocalyptic number.

494557920 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 494557920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870912000).

494557920 is an abundant number, since it is smaller than the sum of its proper divisors (1247266080).

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

494557920 is a wasteful number, since it uses less digits than its factorization.

494557920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 494557920 is about 22238.6582329060. The cubic root of 494557920 is about 790.8104272125.

It can be divided in two parts, 49455 and 7920, that added together give a palindrome (57375).

The spelling of 494557920 in words is "four hundred ninety-four million, five hundred fifty-seven thousand, nine hundred twenty".