20152860 has 96 divisors (see below), whose sum is σ = 69468672. Its totient is φ = 4250880.

The previous prime is 20152841. The next prime is 20152861. The reversal of 20152860 is 6825102.

It is a super-2 number, since 2×20152860² = 812275532359200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20152860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3615 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (723632).

Almost surely, 2^20152860 is an apocalyptic number.

20152860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20152860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34734336).

20152860 is an abundant number, since it is smaller than the sum of its proper divisors (49315812).

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

20152860 is a wasteful number, since it uses less digits than its factorization.

20152860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20152860 is about 4489.1936915219. The cubic root of 20152860 is about 272.1315504092.

Adding to 20152860 its reverse (6825102), we get a palindrome (26977962).

It can be divided in two parts, 20152 and 860, that added together give a palindrome (21012).

The spelling of 20152860 in words is "twenty million, one hundred fifty-two thousand, eight hundred sixty".