20152244 has 12 divisors (see below), whose sum is σ = 40304544. Its totient is φ = 8636664.

The previous prime is 20152213. The next prime is 20152261. The reversal of 20152244 is 44225102.

It is a happy number.

20152244 is an admirable number.

It is a super-2 number, since 2×20152244² = 812225876471072, which contains 22 as substring.

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, 359834 + ... + 359889.

It is an arithmetic number, because the mean of its divisors is an integer number (3358712).

Almost surely, 2^20152244 is an apocalyptic number.

It is an amenable number.

20152244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20152244 is a wasteful number, since it uses less digits than its factorization.

20152244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719734 (or 719732 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20152244 is about 4489.1250817949. The cubic root of 20152244 is about 272.1287776887.

Adding to 20152244 its reverse (44225102), we get a palindrome (64377346).

The spelling of 20152244 in words is "twenty million, one hundred fifty-two thousand, two hundred forty-four".