220787532 has 90 divisors (see below), whose sum is σ = 671464332. Its totient is φ = 63077616.

The previous prime is 220787509. The next prime is 220787533. The reversal of 220787532 is 235787022.

It is a happy number.

220787532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (220787533) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 8923 + ... + 22829.

Almost surely, 2^220787532 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 220787532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335732166).

220787532 is an abundant number, since it is smaller than the sum of its proper divisors (450676800).

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

220787532 is a wasteful number, since it uses less digits than its factorization.

220787532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13937 (or 13919 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 220787532 is about 14858.9209567855. The cubic root of 220787532 is about 604.4005464153.

The spelling of 220787532 in words is "two hundred twenty million, seven hundred eighty-seven thousand, five hundred thirty-two".