1103249280 has 512 divisors, whose sum is σ = 4342947840. Its totient is φ = 232759296.

The previous prime is 1103249263. The next prime is 1103249309. The reversal of 1103249280 is 829423011.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13292119 + ... + 13292201.

It is an arithmetic number, because the mean of its divisors is an integer number (8482320).

Almost surely, 2^1103249280 is an apocalyptic number.

1103249280 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 1103249280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2171473920).

1103249280 is an abundant number, since it is smaller than the sum of its proper divisors (3239698560).

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

1103249280 is a wasteful number, since it uses less digits than its factorization.

1103249280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1103249280 is about 33215.1965220740. The cubic root of 1103249280 is about 1033.2955305861.

The spelling of 1103249280 in words is "one billion, one hundred three million, two hundred forty-nine thousand, two hundred eighty".