2724121980 has 36 divisors (see below), whose sum is σ = 8263170552. Its totient is φ = 726432480.

The previous prime is 2724121963. The next prime is 2724121987. The reversal of 2724121980 is 891214272.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2724121987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7566826 + ... + 7567185.

Almost surely, 2^2724121980 is an apocalyptic number.

2724121980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2724121980 is an abundant number, since it is smaller than the sum of its proper divisors (5539048572).

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

2724121980 is a wasteful number, since it uses less digits than its factorization.

2724121980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15134026 (or 15134021 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2724121980 is about 52193.1219606568. The cubic root of 2724121980 is about 1396.6111880822.

The spelling of 2724121980 in words is "two billion, seven hundred twenty-four million, one hundred twenty-one thousand, nine hundred eighty".