742785736 has 128 divisors (see below), whose sum is σ = 1833062400. Its totient is φ = 273588480.

The previous prime is 742785733. The next prime is 742785737. The reversal of 742785736 is 637587247.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 742785736.

It is not an unprimeable number, because it can be changed into a prime (742785733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1459050 + ... + 1459558.

It is an arithmetic number, because the mean of its divisors is an integer number (14320800).

Almost surely, 2^742785736 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 742785736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916531200).

742785736 is an abundant number, since it is smaller than the sum of its proper divisors (1090276664).

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

742785736 is a wasteful number, since it uses less digits than its factorization.

742785736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 655 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 49.

The square root of 742785736 is about 27254.0957655909. The cubic root of 742785736 is about 905.6377528046.

The spelling of 742785736 in words is "seven hundred forty-two million, seven hundred eighty-five thousand, seven hundred thirty-six".