15022240 has 24 divisors (see below), whose sum is σ = 35490420. Its totient is φ = 6008832.

The previous prime is 15022229. The next prime is 15022247. The reversal of 15022240 is 4222051.

It can be written as a sum of positive squares in 2 ways, for example, as 12475024 + 2547216 = 3532^2 + 1596^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (15022247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46785 + ... + 47104.

Almost surely, 2^15022240 is an apocalyptic number.

15022240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15022240 is an abundant number, since it is smaller than the sum of its proper divisors (20468180).

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

15022240 is an equidigital number, since it uses as much as digits as its factorization.

15022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93904 (or 93896 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 15022240 is about 3875.8534544020. The cubic root of 15022240 is about 246.7430329252.

Adding to 15022240 its reverse (4222051), we get a palindrome (19244291).

The spelling of 15022240 in words is "fifteen million, twenty-two thousand, two hundred forty".