749147240 has 64 divisors (see below), whose sum is σ = 1751915520. Its totient is φ = 288000000.

The previous prime is 749147221. The next prime is 749147261. The reversal of 749147240 is 42741947.

It is a super-2 number, since 2×749147240² = 1122443174399235200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 749147194 and 749147203.

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 15 ways as a sum of consecutive naturals, for example, 185240 + ... + 189240.

It is an arithmetic number, because the mean of its divisors is an integer number (27373680).

Almost surely, 2^749147240 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 749147240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875957760).

749147240 is an abundant number, since it is smaller than the sum of its proper divisors (1002768280).

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

749147240 is a wasteful number, since it uses less digits than its factorization.

749147240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4190 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 749147240 is about 27370.5542508733. The cubic root of 749147240 is about 908.2158174336.

The spelling of 749147240 in words is "seven hundred forty-nine million, one hundred forty-seven thousand, two hundred forty".