2720213100 has 162 divisors, whose sum is σ = 9372321140. Its totient is φ = 659419200.

The previous prime is 2720213063. The next prime is 2720213189. The reversal of 2720213100 is 13120272.

It is a super-2 number, since 2×2720213100² = 14799118618823220000, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 96411 + ... + 121389.

Almost surely, 2^2720213100 is an apocalyptic number.

2720213100 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 2720213100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4686160570).

2720213100 is an abundant number, since it is smaller than the sum of its proper divisors (6652108040).

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

2720213100 is a wasteful number, since it uses less digits than its factorization.

2720213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25021 (or 25000 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 2720213100 is about 52155.6622045967. The cubic root of 2720213100 is about 1395.9428627994.

Adding to 2720213100 its reverse (13120272), we get a palindrome (2733333372).

The spelling of 2720213100 in words is "two billion, seven hundred twenty million, two hundred thirteen thousand, one hundred".