1087290 has 32 divisors (see below), whose sum is σ = 2900160. Its totient is φ = 289872.

The previous prime is 1087271. The next prime is 1087291. The reversal of 1087290 is 927801.

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

It is not an unprimeable number, because it can be changed into a prime (1087291) 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, 1744 + ... + 2283.

It is an arithmetic number, because the mean of its divisors is an integer number (90630).

2^1087290 is an apocalyptic number.

1087290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1087290 is an abundant number, since it is smaller than the sum of its proper divisors (1812870).

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

1087290 is a wasteful number, since it uses less digits than its factorization.

1087290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4037 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1087290 is about 1042.7319885762. The cubic root of 1087290 is about 102.8288860873.

The spelling of 1087290 in words is "one million, eighty-seven thousand, two hundred ninety".