20152356 has 96 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 5443200.

The previous prime is 20152351. The next prime is 20152367. The reversal of 20152356 is 65325102.

It is a super-2 number, since 2×20152356² = 812234904701472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152351) 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, 184830 + ... + 184938.

It is an arithmetic number, because the mean of its divisors is an integer number (591360).

Almost surely, 2^20152356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20152356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28385280).

20152356 is an abundant number, since it is smaller than the sum of its proper divisors (36618204).

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

20152356 is a wasteful number, since it uses less digits than its factorization.

20152356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 20152356 is about 4489.1375563687. The cubic root of 20152356 is about 272.1292818239.

Adding to 20152356 its reverse (65325102), we get a palindrome (85477458).

It can be divided in two parts, 2015 and 2356, that added together give a triangular number (4371 = T₉₃).

The spelling of 20152356 in words is "twenty million, one hundred fifty-two thousand, three hundred fifty-six".