749513820 has 96 divisors (see below), whose sum is σ = 2293724160. Its totient is φ = 181359360.

The previous prime is 749513819. The next prime is 749513837. The reversal of 749513820 is 28315947.

749513820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685194 + ... + 686286.

It is an arithmetic number, because the mean of its divisors is an integer number (23892960).

Almost surely, 2^749513820 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 749513820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146862080).

749513820 is an abundant number, since it is smaller than the sum of its proper divisors (1544210340).

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

749513820 is a wasteful number, since it uses less digits than its factorization.

749513820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 749513820 is about 27377.2500445169. The cubic root of 749513820 is about 908.3639322707.

The spelling of 749513820 in words is "seven hundred forty-nine million, five hundred thirteen thousand, eight hundred twenty".