1098606240 has 240 divisors, whose sum is σ = 3919563648. Its totient is φ = 289764864.

The previous prime is 1098606221. The next prime is 1098606251. The reversal of 1098606240 is 426068901.

1098606240 is a `hidden beast` number, since 1 + 0 + 9 + 8 + 606 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1098606195 and 1098606204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1334469 + ... + 1335291.

Almost surely, 2^1098606240 is an apocalyptic number.

1098606240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1959781824).

1098606240 is an abundant number, since it is smaller than the sum of its proper divisors (2820957408).

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

1098606240 is a wasteful number, since it uses less digits than its factorization.

1098606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1098606240 is about 33145.2295210035. The cubic root of 1098606240 is about 1031.8439461169.

The spelling of 1098606240 in words is "one billion, ninety-eight million, six hundred six thousand, two hundred forty".