749483280 has 800 divisors, whose sum is σ = 3387783168. Its totient is φ = 149299200.

The previous prime is 749483257. The next prime is 749483281. The reversal of 749483280 is 82384947.

749483280 is a `hidden beast` number, since 7 + 494 + 83 + 2 + 80 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its 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 not an unprimeable number, because it can be changed into a prime (749483281) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 18280060 + ... + 18280100.

Almost surely, 2^749483280 is an apocalyptic number.

749483280 is a gapful number since it is divisible by the number (70) 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 749483280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693891584).

749483280 is an abundant number, since it is smaller than the sum of its proper divisors (2638299888).

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

749483280 is a wasteful number, since it uses less digits than its factorization.

749483280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 749483280 is about 27376.6922764603. The cubic root of 749483280 is about 908.3515945791.

The spelling of 749483280 in words is "seven hundred forty-nine million, four hundred eighty-three thousand, two hundred eighty".