1398072 has 32 divisors (see below), whose sum is σ = 3764880. Its totient is φ = 430080.

The previous prime is 1398053. The next prime is 1398079. The reversal of 1398072 is 2708931.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1929 + ... + 2552.

2^1398072 is an apocalyptic number.

1398072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1398072 is an abundant number, since it is smaller than the sum of its proper divisors (2366808).

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

1398072 is a wasteful number, since it uses less digits than its factorization.

1398072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503 (or 4499 counting only the distinct ones).

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

The square root of 1398072 is about 1182.4009472256. The cubic root of 1398072 is about 111.8175174670.

The spelling of 1398072 in words is "one million, three hundred ninety-eight thousand, seventy-two".