3533783220 has 144 divisors (see below), whose sum is σ = 12084528960. Its totient is φ = 856658880.

The previous prime is 3533783203. The next prime is 3533783233. The reversal of 3533783220 is 223873353.

3533783220 is a `hidden beast` number, since 3 + 533 + 78 + 32 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38299 + ... + 92381.

It is an arithmetic number, because the mean of its divisors is an integer number (83920340).

Almost surely, 2^3533783220 is an apocalyptic number.

3533783220 is a gapful number since it is divisible by the number (30) 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 3533783220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6042264480).

3533783220 is an abundant number, since it is smaller than the sum of its proper divisors (8550745740).

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

3533783220 is a wasteful number, since it uses less digits than its factorization.

3533783220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54123 (or 54104 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 3533783220 is about 59445.6324720328. The cubic root of 3533783220 is about 1523.1638881967.

The spelling of 3533783220 in words is "three billion, five hundred thirty-three million, seven hundred eighty-three thousand, two hundred twenty".