1015728345 has 12 divisors (see below), whose sum is σ = 1760595876. Its totient is φ = 541721760.

The previous prime is 1015728341. The next prime is 1015728349. The reversal of 1015728345 is 5438275101.

1015728345 is a `hidden beast` number, since 1 + 0 + 1 + 572 + 83 + 4 + 5 = 666.

1015728345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1015728341) and next prime (1015728349).

It can be written as a sum of positive squares in 2 ways, for example, as 627953481 + 387774864 = 25059^2 + 19692^2 .

It is not a de Polignac number, because 1015728345 - 2² = 1015728341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1015728341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11285826 + ... + 11285915.

It is an arithmetic number, because the mean of its divisors is an integer number (146716323).

Almost surely, 2^1015728345 is an apocalyptic number.

1015728345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1015728345 is a deficient number, since it is larger than the sum of its proper divisors (744867531).

1015728345 is a wasteful number, since it uses less digits than its factorization.

1015728345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22571752 (or 22571749 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1015728345 is about 31870.4933284692. The cubic root of 1015728345 is about 1005.2155325958.

The spelling of 1015728345 in words is "one billion, fifteen million, seven hundred twenty-eight thousand, three hundred forty-five".