15136993 has 8 divisors (see below), whose sum is σ = 15339528. Its totient is φ = 14936064.

The previous prime is 15136991. The next prime is 15136999. The reversal of 15136993 is 39963151.

It can be written as a sum of positive squares in 4 ways, for example, as 20449 + 15116544 = 143^2 + 3888^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15136993 - 2¹ = 15136991 is a prime.

It is a deceptive number, since it divides R_15136992.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15136991) 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, 42705 + ... + 43057.

It is an arithmetic number, because the mean of its divisors is an integer number (1917441).

Almost surely, 2^15136993 is an apocalyptic number.

It is an amenable number.

15136993 is a deficient number, since it is larger than the sum of its proper divisors (202535).

15136993 is a wasteful number, since it uses less digits than its factorization.

15136993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803.

The product of its digits is 21870, while the sum is 37.

The square root of 15136993 is about 3890.6288694760. The cubic root of 15136993 is about 247.3697195511.

It can be divided in two parts, 15136 and 993, that added together give a square (16129 = 127²).

The spelling of 15136993 in words is "fifteen million, one hundred thirty-six thousand, nine hundred ninety-three".