2729154840 has 128 divisors (see below), whose sum is σ = 8750799360. Its totient is φ = 678508544.

The previous prime is 2729154839. The next prime is 2729154887. The reversal of 2729154840 is 484519272.

It is a super-2 number, since 2×2729154840² = 14896572281390851200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2729154792 and 2729154801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212029 + ... + 224531.

It is an arithmetic number, because the mean of its divisors is an integer number (68365620).

Almost surely, 2^2729154840 is an apocalyptic number.

2729154840 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 2729154840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4375399680).

2729154840 is an abundant number, since it is smaller than the sum of its proper divisors (6021644520).

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

2729154840 is a wasteful number, since it uses less digits than its factorization.

2729154840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12641 (or 12637 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 2729154840 is about 52241.3135363191. The cubic root of 2729154840 is about 1397.4707463024.

The spelling of 2729154840 in words is "two billion, seven hundred twenty-nine million, one hundred fifty-four thousand, eight hundred forty".