1298472990 has 32 divisors (see below), whose sum is σ = 3120024960. Its totient is φ = 345849504.

The previous prime is 1298472979. The next prime is 1298473013. The reversal of 1298472990 is 992748921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577 + ... + 50963.

It is an arithmetic number, because the mean of its divisors is an integer number (97500780).

Almost surely, 2^1298472990 is an apocalyptic number.

1298472990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1298472990 is an abundant number, since it is smaller than the sum of its proper divisors (1821551970).

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

1298472990 is a wasteful number, since it uses less digits than its factorization.

1298472990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51256.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 1298472990 is about 36034.3307139178. The cubic root of 1298472990 is about 1090.9653905477.

The spelling of 1298472990 in words is "one billion, two hundred ninety-eight million, four hundred seventy-two thousand, nine hundred ninety".