1098097720 has 32 divisors (see below), whose sum is σ = 2475159120. Its totient is φ = 438449920.

The previous prime is 1098097697. The next prime is 1098097733. The reversal of 1098097720 is 277908901.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1861 + ... + 46900.

Almost surely, 2^1098097720 is an apocalyptic number.

1098097720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098097720 is an abundant number, since it is smaller than the sum of its proper divisors (1377061400).

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

1098097720 is a wasteful number, since it uses less digits than its factorization.

1098097720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49335 (or 49331 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 1098097720 is about 33137.5575442729. The cubic root of 1098097720 is about 1031.6847157986.

The spelling of 1098097720 in words is "one billion, ninety-eight million, ninety-seven thousand, seven hundred twenty".