1087400 has 24 divisors (see below), whose sum is σ = 2528670. Its totient is φ = 434880.

The previous prime is 1087391. The next prime is 1087409. The reversal of 1087400 is 47801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1087391) and next prime (1087409).

It can be written as a sum of positive squares in 3 ways, for example, as 835396 + 252004 = 914^2 + 502^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1087409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2519 + ... + 2918.

2^1087400 is an apocalyptic number.

1087400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087400 is an abundant number, since it is smaller than the sum of its proper divisors (1441270).

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

1087400 is a wasteful number, since it uses less digits than its factorization.

1087400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453 (or 5444 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1087400 is about 1042.7847332983. The cubic root of 1087400 is about 102.8323536675.

The spelling of 1087400 in words is "one million, eighty-seven thousand, four hundred".