1302398040 has 64 divisors (see below), whose sum is σ = 4033244160. Its totient is φ = 336101760.

The previous prime is 1302398021. The next prime is 1302398047. The reversal of 1302398040 is 408932031.

It is a hoax number, since the sum of its digits (30) 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 1302397989 and 1302398007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302398047) by changing a digit.

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, 171334 + ... + 178773.

It is an arithmetic number, because the mean of its divisors is an integer number (63019440).

Almost surely, 2^1302398040 is an apocalyptic number.

1302398040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302398040 is an abundant number, since it is smaller than the sum of its proper divisors (2730846120).

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

1302398040 is a wasteful number, since it uses less digits than its factorization.

1302398040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350152 (or 350148 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1302398040 is about 36088.7522643829. The cubic root of 1302398040 is about 1092.0635487444.

The spelling of 1302398040 in words is "one billion, three hundred two million, three hundred ninety-eight thousand, forty".