1298213952 has 112 divisors (see below), whose sum is σ = 3975567360. Its totient is φ = 366193152.

The previous prime is 1298213941. The next prime is 1298213981. The reversal of 1298213952 is 2593128921.

It is a tau number, because it is divible by the number of its divisors (112).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100063 + ... + 112289.

Almost surely, 2^1298213952 is an apocalyptic number.

1298213952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298213952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1987783680).

1298213952 is an abundant number, since it is smaller than the sum of its proper divisors (2677353408).

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

1298213952 is a wasteful number, since it uses less digits than its factorization.

1298213952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12328 (or 12318 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 1298213952 is about 36030.7362122952. The cubic root of 1298213952 is about 1090.8928385862.

The spelling of 1298213952 in words is "one billion, two hundred ninety-eight million, two hundred thirteen thousand, nine hundred fifty-two".