1098297270 has 288 divisors, whose sum is σ = 3503305728. Its totient is φ = 237758976.

The previous prime is 1098297259. The next prime is 1098297283. The reversal of 1098297270 is 727928901.

1098297270 is a `hidden beast` number, since 1 + 0 + 98 + 297 + 270 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8647947 + ... + 8648073.

It is an arithmetic number, because the mean of its divisors is an integer number (12164256).

Almost surely, 2^1098297270 is an apocalyptic number.

1098297270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098297270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751652864).

1098297270 is an abundant number, since it is smaller than the sum of its proper divisors (2405008458).

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

1098297270 is a wasteful number, since it uses less digits than its factorization.

1098297270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 1098297270 is about 33140.5683415357. The cubic root of 1098297270 is about 1031.7472057489.

The spelling of 1098297270 in words is "one billion, ninety-eight million, two hundred ninety-seven thousand, two hundred seventy".