15890142 has 32 divisors (see below), whose sum is σ = 32752512. Its totient is φ = 5137184.

The previous prime is 15890141. The next prime is 15890143. The reversal of 15890142 is 24109851.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15890141) and next prime (15890143).

It is a super-2 number, since 2×15890142² = 504993225560328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15890141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33793 + ... + 34259.

It is an arithmetic number, because the mean of its divisors is an integer number (1023516).

Almost surely, 2^15890142 is an apocalyptic number.

15890142 is an abundant number, since it is smaller than the sum of its proper divisors (16862370).

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

15890142 is a wasteful number, since it uses less digits than its factorization.

15890142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 15890142 is about 3986.2440968912. The cubic root of 15890142 is about 251.4061666195.

Adding to 15890142 its reverse (24109851), we get a palindrome (39999993).

The spelling of 15890142 in words is "fifteen million, eight hundred ninety thousand, one hundred forty-two".