1358158728 has 16 divisors (see below), whose sum is σ = 3395396880. Its totient is φ = 452719568.

The previous prime is 1358158727. The next prime is 1358158733. The reversal of 1358158728 is 8278518531.

It is a super-4 number, since 4×1358158728⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1358158723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28294950 + ... + 28294997.

It is an arithmetic number, because the mean of its divisors is an integer number (212212305).

Almost surely, 2^1358158728 is an apocalyptic number.

It is an amenable number.

1358158728 is an abundant number, since it is smaller than the sum of its proper divisors (2037238152).

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

1358158728 is a wasteful number, since it uses less digits than its factorization.

1358158728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56589956 (or 56589952 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The square root of 1358158728 is about 36853.2051251991. The cubic root of 1358158728 is about 1107.4314246700.

The spelling of 1358158728 in words is "one billion, three hundred fifty-eight million, one hundred fifty-eight thousand, seven hundred twenty-eight".