749697280 has 144 divisors (see below), whose sum is σ = 1923191424. Its totient is φ = 279019520.

The previous prime is 749697271. The next prime is 749697301. The reversal of 749697280 is 82796947.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2850429 + ... + 2850691.

It is an arithmetic number, because the mean of its divisors is an integer number (13355496).

Almost surely, 2^749697280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749697280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961595712).

749697280 is an abundant number, since it is smaller than the sum of its proper divisors (1173494144).

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

749697280 is a wasteful number, since it uses less digits than its factorization.

749697280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 749697280 is about 27380.6004316925. The cubic root of 749697280 is about 908.4380402447.

The spelling of 749697280 in words is "seven hundred forty-nine million, six hundred ninety-seven thousand, two hundred eighty".