1387028 has 12 divisors (see below), whose sum is σ = 2446752. Its totient is φ = 687960.

The previous prime is 1387021. The next prime is 1387037. The reversal of 1387028 is 8207831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800 + ... + 1847.

It is an arithmetic number, because the mean of its divisors is an integer number (203896).

2^1387028 is an apocalyptic number.

It is an amenable number.

1387028 is a deficient number, since it is larger than the sum of its proper divisors (1059724).

1387028 is a wasteful number, since it uses less digits than its factorization.

1387028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1387028 is about 1177.7215290551. The cubic root of 1387028 is about 111.5223064623.

The spelling of 1387028 in words is "one million, three hundred eighty-seven thousand, twenty-eight".