1387266 has 32 divisors (see below), whose sum is σ = 2999040. Its totient is φ = 426384.

The previous prime is 1387261. The next prime is 1387271. The reversal of 1387266 is 6627831.

It is an interprime number because it is at equal distance from previous prime (1387261) and next prime (1387271).

It is not an unprimeable number, because it can be changed into a prime (1387261) 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, 4761 + ... + 5043.

It is an arithmetic number, because the mean of its divisors is an integer number (93720).

2^1387266 is an apocalyptic number.

1387266 is an abundant number, since it is smaller than the sum of its proper divisors (1611774).

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

1387266 is a wasteful number, since it uses less digits than its factorization.

1387266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350.

The product of its digits is 12096, while the sum is 33.

The square root of 1387266 is about 1177.8225672825. The cubic root of 1387266 is about 111.5286847981.

It can be divided in two parts, 1387 and 266, that added together give a triangular number (1653 = T₅₇).

The spelling of 1387266 in words is "one million, three hundred eighty-seven thousand, two hundred sixty-six".