1098432 has 42 divisors (see below), whose sum is σ = 3150108. Its totient is φ = 365952.

The previous prime is 1098401. The next prime is 1098439. The reversal of 1098432 is 2348901.

It is a junction number, because it is equal to n+sod(n) for n = 1098396 and 1098405.

It is not an unprimeable number, because it can be changed into a prime (1098439) 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, 378 + ... + 1529.

2^1098432 is an apocalyptic number.

1098432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1098432 is an abundant number, since it is smaller than the sum of its proper divisors (2051676).

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

1098432 is a wasteful number, since it uses less digits than its factorization.

1098432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1098432 is about 1048.0610669231. The cubic root of 1098432 is about 103.1789392754.

The spelling of 1098432 in words is "one million, ninety-eight thousand, four hundred thirty-two".