742693520 has 20 divisors (see below), whose sum is σ = 1726762620. Its totient is φ = 297077376.

The previous prime is 742693513. The next prime is 742693531. The reversal of 742693520 is 25396247.

It can be written as a sum of positive squares in 2 ways, for example, as 99361024 + 643332496 = 9968^2 + 25364^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4641755 + ... + 4641914.

It is an arithmetic number, because the mean of its divisors is an integer number (86338131).

Almost surely, 2^742693520 is an apocalyptic number.

It is an amenable number.

742693520 is an abundant number, since it is smaller than the sum of its proper divisors (984069100).

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

742693520 is a wasteful number, since it uses less digits than its factorization.

742693520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9283682 (or 9283676 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 742693520 is about 27252.4039306627. The cubic root of 742693520 is about 905.6002732896.

The spelling of 742693520 in words is "seven hundred forty-two million, six hundred ninety-three thousand, five hundred twenty".