220001500 has 48 divisors (see below), whose sum is σ = 482672736. Its totient is φ = 87600000.

The previous prime is 220001497. The next prime is 220001521. The reversal of 220001500 is 5100022.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 124624 + ... + 126376.

It is an arithmetic number, because the mean of its divisors is an integer number (10055682).

Almost surely, 2^220001500 is an apocalyptic number.

220001500 is a gapful number since it is divisible by the number (20) 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 220001500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241336368).

220001500 is an abundant number, since it is smaller than the sum of its proper divisors (262671236).

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

220001500 is a wasteful number, since it uses less digits than its factorization.

220001500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 220001500 is about 14832.4475390948. The cubic root of 220001500 is about 603.6824456791.

Adding to 220001500 its reverse (5100022), we get a palindrome (225101522).

The spelling of 220001500 in words is "two hundred twenty million, one thousand, five hundred".