15448220 has 24 divisors (see below), whose sum is σ = 32779824. Its totient is φ = 6114816.

The previous prime is 15448219. The next prime is 15448241. The reversal of 15448220 is 2284451.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15448220.

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, 2042 + ... + 5921.

It is an arithmetic number, because the mean of its divisors is an integer number (1365826).

Almost surely, 2^15448220 is an apocalyptic number.

15448220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15448220 is an abundant number, since it is smaller than the sum of its proper divisors (17331604).

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

15448220 is a wasteful number, since it uses less digits than its factorization.

15448220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8069 (or 8067 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 15448220 is about 3930.4223691609. The cubic root of 15448220 is about 249.0535951255.

The spelling of 15448220 in words is "fifteen million, four hundred forty-eight thousand, two hundred twenty".