2220021432 has 160 divisors (see below), whose sum is σ = 6636453120. Its totient is φ = 690923520.

The previous prime is 2220021409. The next prime is 2220021473. The reversal of 2220021432 is 2341200222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1508457 + ... + 1509927.

It is an arithmetic number, because the mean of its divisors is an integer number (41477832).

Almost surely, 2^2220021432 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 2220021432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3318226560).

2220021432 is an abundant number, since it is smaller than the sum of its proper divisors (4416431688).

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

2220021432 is a wasteful number, since it uses less digits than its factorization.

2220021432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2220021432 is about 47117.1033914437. The cubic root of 2220021432 is about 1304.5249479782.

Adding to 2220021432 its reverse (2341200222), we get a palindrome (4561221654).

The spelling of 2220021432 in words is "two billion, two hundred twenty million, twenty-one thousand, four hundred thirty-two".