1287370 has 32 divisors (see below), whose sum is σ = 2706048. Its totient is φ = 431808.

The previous prime is 1287361. The next prime is 1287371. The reversal of 1287370 is 737821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1287371) 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, 3537 + ... + 3883.

It is an arithmetic number, because the mean of its divisors is an integer number (84564).

2^1287370 is an apocalyptic number.

1287370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1287370 is an abundant number, since it is smaller than the sum of its proper divisors (1418678).

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

1287370 is a wasteful number, since it uses less digits than its factorization.

1287370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1287370 is about 1134.6232855005. The cubic root of 1287370 is about 108.7846940875.

The spelling of 1287370 in words is "one million, two hundred eighty-seven thousand, three hundred seventy".