490357890 has 192 divisors, whose sum is σ = 1482624000. Its totient is φ = 111196800.

The previous prime is 490357841. The next prime is 490357921. The reversal of 490357890 is 98753094.

490357890 is a `hidden beast` number, since 490 + 3 + 5 + 78 + 90 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2464011 + ... + 2464209.

It is an arithmetic number, because the mean of its divisors is an integer number (7722000).

Almost surely, 2^490357890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490357890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741312000).

490357890 is an abundant number, since it is smaller than the sum of its proper divisors (992266110).

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

490357890 is a wasteful number, since it uses less digits than its factorization.

490357890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 490357890 is about 22144.0260567043. The cubic root of 490357890 is about 788.5654090537.

The spelling of 490357890 in words is "four hundred ninety million, three hundred fifty-seven thousand, eight hundred ninety".