1298631628 has 12 divisors (see below), whose sum is σ = 2597263312. Its totient is φ = 556556400.

The previous prime is 1298631619. The next prime is 1298631637. The reversal of 1298631628 is 8261368921.

It is an interprime number because it is at equal distance from previous prime (1298631619) and next prime (1298631637).

1298631628 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23189823 + ... + 23189878.

Almost surely, 2^1298631628 is an apocalyptic number.

It is an amenable number.

1298631628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1298631628 is a wasteful number, since it uses less digits than its factorization.

1298631628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46379712 (or 46379710 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 1298631628 is about 36036.5318531071. The cubic root of 1298631628 is about 1091.0098174813.

The spelling of 1298631628 in words is "one billion, two hundred ninety-eight million, six hundred thirty-one thousand, six hundred twenty-eight".