1398270 has 32 divisors (see below), whose sum is σ = 3391488. Its totient is φ = 368928.

The previous prime is 1398269. The next prime is 1398281. The reversal of 1398270 is 728931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3627 + ... + 3993.

It is an arithmetic number, because the mean of its divisors is an integer number (105984).

2^1398270 is an apocalyptic number.

1398270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398270 is an abundant number, since it is smaller than the sum of its proper divisors (1993218).

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

1398270 is a wasteful number, since it uses less digits than its factorization.

1398270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1398270 is about 1182.4846722051. The cubic root of 1398270 is about 111.8227958846.

The spelling of 1398270 in words is "one million, three hundred ninety-eight thousand, two hundred seventy".