1098662400 has 720 divisors, whose sum is σ = 4673227680. Its totient is φ = 250675200.

The previous prime is 1098662381. The next prime is 1098662429. The reversal of 1098662400 is 42668901.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 64627192 + ... + 64627208.

It is an arithmetic number, because the mean of its divisors is an integer number (6490594).

Almost surely, 2^1098662400 is an apocalyptic number.

1098662400 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 1098662400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2336613840).

1098662400 is an abundant number, since it is smaller than the sum of its proper divisors (3574565280).

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

1098662400 is a wasteful number, since it uses less digits than its factorization.

1098662400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 38 counting only the distinct ones).

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

The square root of 1098662400 is about 33146.0766909147. The cubic root of 1098662400 is about 1031.8615282030.

The spelling of 1098662400 in words is "one billion, ninety-eight million, six hundred sixty-two thousand, four hundred".