740978320 has 40 divisors (see below), whose sum is σ = 1824117624. Its totient is φ = 278956032.

The previous prime is 740978257. The next prime is 740978323. The reversal of 740978320 is 23879047.

It can be written as a sum of positive squares in 4 ways, for example, as 83978896 + 656999424 = 9164^2 + 25632^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (740978323) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 271059 + ... + 273778.

Almost surely, 2^740978320 is an apocalyptic number.

It is an amenable number.

740978320 is an abundant number, since it is smaller than the sum of its proper divisors (1083139304).

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

740978320 is a wasteful number, since it uses less digits than its factorization.

740978320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544867 (or 544861 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 740978320 is about 27220.9169573694. The cubic root of 740978320 is about 904.9025952573.

The spelling of 740978320 in words is "seven hundred forty million, nine hundred seventy-eight thousand, three hundred twenty".