747428715 has 160 divisors (see below), whose sum is σ = 1580705280. Its totient is φ = 333849600.

The previous prime is 747428711. The next prime is 747428719. The reversal of 747428715 is 517824747.

It is an interprime number because it is at equal distance from previous prime (747428711) and next prime (747428719).

It is not a de Polignac number, because 747428715 - 2² = 747428711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (747428711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5377116 + ... + 5377254.

It is an arithmetic number, because the mean of its divisors is an integer number (9879408).

Almost surely, 2^747428715 is an apocalyptic number.

747428715 is an abundant number, since it is smaller than the sum of its proper divisors (833276565).

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

747428715 is a wasteful number, since it uses less digits than its factorization.

747428715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 246 counting only the distinct ones).

The product of its digits is 439040, while the sum is 45.

The square root of 747428715 is about 27339.1425432474. The cubic root of 747428715 is about 907.5208109427.

The spelling of 747428715 in words is "seven hundred forty-seven million, four hundred twenty-eight thousand, seven hundred fifteen".