1393740 has 96 divisors (see below), whose sum is σ = 4536000. Its totient is φ = 354816.

The previous prime is 1393739. The next prime is 1393751. The reversal of 1393740 is 473931.

It is a super-2 number, since 2×1393740² = 3885022375200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15616 + ... + 15704.

It is an arithmetic number, because the mean of its divisors is an integer number (47250).

2^1393740 is an apocalyptic number.

1393740 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 1393740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2268000).

1393740 is an abundant number, since it is smaller than the sum of its proper divisors (3142260).

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

1393740 is a wasteful number, since it uses less digits than its factorization.

1393740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 1393740 is about 1180.5676600687. The cubic root of 1393740 is about 111.7019071468.

The spelling of 1393740 in words is "one million, three hundred ninety-three thousand, seven hundred forty".