15401244 has 12 divisors (see below), whose sum is σ = 35936264. Its totient is φ = 5133744.

The previous prime is 15401227. The next prime is 15401251. The reversal of 15401244 is 44210451.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 15401244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641707 + ... + 641730.

Almost surely, 2^15401244 is an apocalyptic number.

It is an amenable number.

15401244 is an abundant number, since it is smaller than the sum of its proper divisors (20535020).

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

15401244 is a wasteful number, since it uses less digits than its factorization.

15401244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283444 (or 1283442 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 15401244 is about 3924.4418711455. The cubic root of 15401244 is about 248.8008924262.

Adding to 15401244 its reverse (44210451), we get a palindrome (59611695).

The spelling of 15401244 in words is "fifteen million, four hundred one thousand, two hundred forty-four".