15493842 has 80 divisors (see below), whose sum is σ = 42770112. Its totient is φ = 4082400.

The previous prime is 15493837. The next prime is 15493843. The reversal of 15493842 is 24839451.

It is a junction number, because it is equal to n+sod(n) for n = 15493797 and 15493806.

It is not an unprimeable number, because it can be changed into a prime (15493843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14217 + ... + 15267.

Almost surely, 2^15493842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15493842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21385056).

15493842 is an abundant number, since it is smaller than the sum of its proper divisors (27276270).

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

15493842 is a wasteful number, since it uses less digits than its factorization.

15493842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1076 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 15493842 is about 3936.2217925315. The cubic root of 15493842 is about 249.2985242346.

The spelling of 15493842 in words is "fifteen million, four hundred ninety-three thousand, eight hundred forty-two".