1087398 has 32 divisors (see below), whose sum is σ = 2604000. Its totient is φ = 334368.

The previous prime is 1087391. The next prime is 1087409. The reversal of 1087398 is 8937801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087391) 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, 73 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (81375).

2^1087398 is an apocalyptic number.

1087398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1087398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302000).

1087398 is an abundant number, since it is smaller than the sum of its proper divisors (1516602).

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

1087398 is a wasteful number, since it uses less digits than its factorization.

1087398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1087398 is about 1042.7837743272. The cubic root of 1087398 is about 102.8322906227.

It can be divided in two parts, 1087 and 398, that added together give a triangular number (1485 = T₅₄).

The spelling of 1087398 in words is "one million, eighty-seven thousand, three hundred ninety-eight".