15271990 has 16 divisors (see below), whose sum is σ = 27743760. Its totient is φ = 6052320.

The previous prime is 15271987. The next prime is 15272017. The reversal of 15271990 is 9917251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5916 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (1733985).

Almost surely, 2^15271990 is an apocalyptic number.

15271990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15271990 is a deficient number, since it is larger than the sum of its proper divisors (12471770).

15271990 is a wasteful number, since it uses less digits than its factorization.

15271990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14127.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 15271990 is about 3907.9393546983. The cubic root of 15271990 is about 248.1029207745.

It can be divided in two parts, 15271 and 990, that added together give a palindrome (16261).

The spelling of 15271990 in words is "fifteen million, two hundred seventy-one thousand, nine hundred ninety".