15672240 has 60 divisors (see below), whose sum is σ = 52635024. Its totient is φ = 4179072.

The previous prime is 15672233. The next prime is 15672299. The reversal of 15672240 is 4227651.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10164 + ... + 11603.

Almost surely, 2^15672240 is an apocalyptic number.

15672240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15672240 is an abundant number, since it is smaller than the sum of its proper divisors (36962784).

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

15672240 is a wasteful number, since it uses less digits than its factorization.

15672240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21786 (or 21777 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 15672240 is about 3958.8180054153. The cubic root of 15672240 is about 250.2516931838.

Adding to 15672240 its reverse (4227651), we get a palindrome (19899891).

The spelling of 15672240 in words is "fifteen million, six hundred seventy-two thousand, two hundred forty".