15994122 has 8 divisors (see below), whose sum is σ = 31988256. Its totient is φ = 5331372.

The previous prime is 15994117. The next prime is 15994123. The reversal of 15994122 is 22149951.

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

15994122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (15994123) 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, 1332838 + ... + 1332849.

It is an arithmetic number, because the mean of its divisors is an integer number (3998532).

Almost surely, 2^15994122 is an apocalyptic number.

15994122 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.

15994122 is a wasteful number, since it uses less digits than its factorization.

15994122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665692.

The product of its digits is 6480, while the sum is 33.

The square root of 15994122 is about 3999.2651825054. The cubic root of 15994122 is about 251.9533486331.

The spelling of 15994122 in words is "fifteen million, nine hundred ninety-four thousand, one hundred twenty-two".