15889242 has 8 divisors (see below), whose sum is σ = 31778496. Its totient is φ = 5296412.

The previous prime is 15889207. The next prime is 15889249. The reversal of 15889242 is 24298851.

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

15889242 is an admirable number.

It is a super-2 number, since 2×15889242² = 504936022669128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15889242.

It is not an unprimeable number, because it can be changed into a prime (15889249) 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, 1324098 + ... + 1324109.

It is an arithmetic number, because the mean of its divisors is an integer number (3972312).

Almost surely, 2^15889242 is an apocalyptic number.

15889242 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.

15889242 is a wasteful number, since it uses less digits than its factorization.

15889242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648212.

The product of its digits is 46080, while the sum is 39.

The square root of 15889242 is about 3986.1312070728. The cubic root of 15889242 is about 251.4014200745.

The spelling of 15889242 in words is "fifteen million, eight hundred eighty-nine thousand, two hundred forty-two".