15421016 has 16 divisors (see below), whose sum is σ = 31138800. Its totient is φ = 7117344.

The previous prime is 15421013. The next prime is 15421033. The reversal of 15421016 is 61012451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15421013) 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 3 ways as a sum of consecutive naturals, for example, 74036 + ... + 74243.

It is an arithmetic number, because the mean of its divisors is an integer number (1946175).

Almost surely, 2^15421016 is an apocalyptic number.

It is an amenable number.

15421016 is an abundant number, since it is smaller than the sum of its proper divisors (15717784).

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

15421016 is a wasteful number, since it uses less digits than its factorization.

15421016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148298 (or 148294 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 15421016 is about 3926.9601474932. The cubic root of 15421016 is about 248.9073164620.

Adding to 15421016 its reverse (61012451), we get a palindrome (76433467).

The spelling of 15421016 in words is "fifteen million, four hundred twenty-one thousand, sixteen".