498898640 has 40 divisors (see below), whose sum is σ = 1164119688. Its totient is φ = 198840320.

The previous prime is 498898607. The next prime is 498898651. The reversal of 498898640 is 46898894.

It can be written as a sum of positive squares in 4 ways, for example, as 202094656 + 296803984 = 14216^2 + 17228^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11384 + ... + 33576.

Almost surely, 2^498898640 is an apocalyptic number.

498898640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

498898640 is an abundant number, since it is smaller than the sum of its proper divisors (665221048).

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

498898640 is a wasteful number, since it uses less digits than its factorization.

498898640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22487 (or 22481 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 498898640 is about 22336.0390400805. The cubic root of 498898640 is about 793.1173308949.

The spelling of 498898640 in words is "four hundred ninety-eight million, eight hundred ninety-eight thousand, six hundred forty".