223528020 has 48 divisors (see below), whose sum is σ = 629088768. Its totient is φ = 59301760.

The previous prime is 223528009. The next prime is 223528033. The reversal of 223528020 is 20825322.

223528020 is nontrivially palindromic in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2365 + ... + 21275.

It is an arithmetic number, because the mean of its divisors is an integer number (13106016).

Almost surely, 2^223528020 is an apocalyptic number.

223528020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223528020 is an abundant number, since it is smaller than the sum of its proper divisors (405560748).

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

223528020 is a wasteful number, since it uses less digits than its factorization.

223528020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19120 (or 19118 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 223528020 is about 14950.8534873431. The cubic root of 223528020 is about 606.8909440599.

The spelling of 223528020 in words is "two hundred twenty-three million, five hundred twenty-eight thousand, twenty".