15006406 has 4 divisors (see below), whose sum is σ = 22509612. Its totient is φ = 7503202.

The previous prime is 15006403. The next prime is 15006413. The reversal of 15006406 is 60460051.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15006403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3751600 + ... + 3751603.

It is an arithmetic number, because the mean of its divisors is an integer number (5627403).

Almost surely, 2^15006406 is an apocalyptic number.

15006406 is a deficient number, since it is larger than the sum of its proper divisors (7503206).

15006406 is an equidigital number, since it uses as much as digits as its factorization.

15006406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7503205.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 15006406 is about 3873.8102689729. The cubic root of 15006406 is about 246.6563103354.

Adding to 15006406 its reverse (60460051), we get a palindrome (75466457).

The spelling of 15006406 in words is "fifteen million, six thousand, four hundred six".