20235264 has 88 divisors (see below), whose sum is σ = 61704768. Its totient is φ = 5775360.

The previous prime is 20235251. The next prime is 20235269. The reversal of 20235264 is 46253202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20235269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21034 + ... + 21974.

Almost surely, 2^20235264 is an apocalyptic number.

20235264 is a gapful number since it is divisible by the number (24) 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 20235264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30852384).

20235264 is an abundant number, since it is smaller than the sum of its proper divisors (41469504).

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

20235264 is an equidigital number, since it uses as much as digits as its factorization.

20235264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20235264 is about 4498.3623686849. The cubic root of 20235264 is about 272.5019566114.

Adding to 20235264 its reverse (46253202), we get a palindrome (66488466).

The spelling of 20235264 in words is "twenty million, two hundred thirty-five thousand, two hundred sixty-four".