15802842 has 24 divisors (see below), whose sum is σ = 34741728. Its totient is φ = 4788520.

The previous prime is 15802819. The next prime is 15802849. The reversal of 15802842 is 24820851.

15802842 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15802849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10158 + ... + 11609.

It is an arithmetic number, because the mean of its divisors is an integer number (1447572).

Almost surely, 2^15802842 is an apocalyptic number.

15802842 is an abundant number, since it is smaller than the sum of its proper divisors (18938886).

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

15802842 is a wasteful number, since it uses less digits than its factorization.

15802842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21794 (or 21783 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 15802842 is about 3975.2788581432. The cubic root of 15802842 is about 250.9449147118.

Subtracting 15802842 from its reverse (24820851), we obtain a square (9018009 = 3003²).

The spelling of 15802842 in words is "fifteen million, eight hundred two thousand, eight hundred forty-two".