1398220704 has 240 divisors, whose sum is σ = 4303031040. Its totient is φ = 444994560.

The previous prime is 1398220667. The next prime is 1398220753. The reversal of 1398220704 is 4070228931.

It is a super-2 number, since 2×1398220704² = 3910042274188511232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6269937 + ... + 6270159.

It is an arithmetic number, because the mean of its divisors is an integer number (17929296).

Almost surely, 2^1398220704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398220704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151515520).

1398220704 is an abundant number, since it is smaller than the sum of its proper divisors (2904810336).

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

1398220704 is a wasteful number, since it uses less digits than its factorization.

1398220704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1398220704 is about 37392.7894653501. The cubic root of 1398220704 is about 1118.2148176514.

The spelling of 1398220704 in words is "one billion, three hundred ninety-eight million, two hundred twenty thousand, seven hundred four".