1398620800 has 192 divisors, whose sum is σ = 3727618560. Its totient is φ = 517017600.

The previous prime is 1398620771. The next prime is 1398620827. The reversal of 1398620800 is 80268931.

It is a super-2 number, since 2×1398620800² = 3912280284385280000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1398620800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2281294 + ... + 2281906.

It is an arithmetic number, because the mean of its divisors is an integer number (19414680).

Almost surely, 2^1398620800 is an apocalyptic number.

1398620800 is a gapful number since it is divisible by the number (10) 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 1398620800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863809280).

1398620800 is an abundant number, since it is smaller than the sum of its proper divisors (2328997760).

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

1398620800 is a wasteful number, since it uses less digits than its factorization.

1398620800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1398620800 is about 37398.1389911316. The cubic root of 1398620800 is about 1118.3214652424.

The spelling of 1398620800 in words is "one billion, three hundred ninety-eight million, six hundred twenty thousand, eight hundred".