15975906 has 8 divisors (see below), whose sum is σ = 31951824. Its totient is φ = 5325300.

The previous prime is 15975901. The next prime is 15975907. The reversal of 15975906 is 60957951.

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

15975906 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15975901) 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, 1331320 + ... + 1331331.

It is an arithmetic number, because the mean of its divisors is an integer number (3993978).

Almost surely, 2^15975906 is an apocalyptic number.

15975906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15975906 is a wasteful number, since it uses less digits than its factorization.

15975906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662656.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 15975906 is about 3996.9871153157. The cubic root of 15975906 is about 251.8576608612.

It can be divided in two parts, 1597 and 5906, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 15975906 in words is "fifteen million, nine hundred seventy-five thousand, nine hundred six".