1087980 has 24 divisors (see below), whose sum is σ = 3046512. Its totient is φ = 290112.

The previous prime is 1087973. The next prime is 1087981. The reversal of 1087980 is 897801.

It is not an unprimeable number, because it can be changed into a prime (1087981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9007 + ... + 9126.

It is an arithmetic number, because the mean of its divisors is an integer number (126938).

2^1087980 is an apocalyptic number.

1087980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087980 is an abundant number, since it is smaller than the sum of its proper divisors (1958532).

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

1087980 is a wasteful number, since it uses less digits than its factorization.

1087980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18145 (or 18143 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1087980 is about 1043.0627977260. The cubic root of 1087980 is about 102.8506334064.

It can be divided in two parts, 10 and 87980, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 1087980 in words is "one million, eighty-seven thousand, nine hundred eighty".