1398056268 has 48 divisors (see below), whose sum is σ = 3947457024. Its totient is φ = 375947520.

The previous prime is 1398056267. The next prime is 1398056279. The reversal of 1398056268 is 8626508931.

It is a happy number.

It is a super-2 number, since 2×1398056268² = 3909122656988175648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1398056263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488088 + ... + 490943.

It is an arithmetic number, because the mean of its divisors is an integer number (82238688).

Almost surely, 2^1398056268 is an apocalyptic number.

It is an amenable number.

1398056268 is an abundant number, since it is smaller than the sum of its proper divisors (2549400756).

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

1398056268 is a wasteful number, since it uses less digits than its factorization.

1398056268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979062 (or 979060 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1398056268 is about 37390.5906345433. The cubic root of 1398056268 is about 1118.1709805138.

The spelling of 1398056268 in words is "one billion, three hundred ninety-eight million, fifty-six thousand, two hundred sixty-eight".