740806728 has 32 divisors (see below), whose sum is σ = 1869014400. Its totient is φ = 244669248.

The previous prime is 740806727. The next prime is 740806741. The reversal of 740806728 is 827608047.

It is a self number, because there is not a number n which added to its sum of digits gives 740806728.

It is not an unprimeable number, because it can be changed into a prime (740806723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138976 + ... + 144207.

It is an arithmetic number, because the mean of its divisors is an integer number (58406700).

Almost surely, 2^740806728 is an apocalyptic number.

It is an amenable number.

740806728 is an abundant number, since it is smaller than the sum of its proper divisors (1128207672).

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

740806728 is a wasteful number, since it uses less digits than its factorization.

740806728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283301 (or 283297 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 740806728 is about 27217.7649339544. The cubic root of 740806728 is about 904.8327389474.

It can be divided in two parts, 74080 and 6728, that added together give a palindrome (80808).

The spelling of 740806728 in words is "seven hundred forty million, eight hundred six thousand, seven hundred twenty-eight".