490251917428 has 288 divisors, whose sum is σ = 1181479219200. Its totient is φ = 175610179584.

The previous prime is 490251917423. The next prime is 490251917429. The reversal of 490251917428 is 824719152094.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490251917423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 481110303 + ... + 481111321.

It is an arithmetic number, because the mean of its divisors is an integer number (4102358400).

Almost surely, 2^490251917428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490251917428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590739609600).

490251917428 is an abundant number, since it is smaller than the sum of its proper divisors (691227301772).

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

490251917428 is a wasteful number, since it uses less digits than its factorization.

490251917428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 490251917428 in words is "four hundred ninety billion, two hundred fifty-one million, nine hundred seventeen thousand, four hundred twenty-eight".