1387506 has 32 divisors (see below), whose sum is σ = 2999808. Its totient is φ = 426240.

The previous prime is 1387501. The next prime is 1387517. The reversal of 1387506 is 6057831.

It is not an unprimeable number, because it can be changed into a prime (1387501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6111 + ... + 6333.

It is an arithmetic number, because the mean of its divisors is an integer number (93744).

2^1387506 is an apocalyptic number.

1387506 is an abundant number, since it is smaller than the sum of its proper divisors (1612302).

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

1387506 is a wasteful number, since it uses less digits than its factorization.

1387506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1387506 is about 1177.9244457944. The cubic root of 1387506 is about 111.5351159947.

The spelling of 1387506 in words is "one million, three hundred eighty-seven thousand, five hundred six".