2723781240 has 48 divisors (see below), whose sum is σ = 8852290200. Its totient is φ = 726341568.

The previous prime is 2723781223. The next prime is 2723781253. The reversal of 2723781240 is 421873272.

2723781240 is a `hidden beast` number, since 272 + 378 + 12 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2723781195 and 2723781204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3782670 + ... + 3783389.

Almost surely, 2^2723781240 is an apocalyptic number.

2723781240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2723781240 is an abundant number, since it is smaller than the sum of its proper divisors (6128508960).

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

2723781240 is a wasteful number, since it uses less digits than its factorization.

2723781240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7566076 (or 7566069 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2723781240 is about 52189.8576353682. The cubic root of 2723781240 is about 1396.5529551124.

The spelling of 2723781240 in words is "two billion, seven hundred twenty-three million, seven hundred eighty-one thousand, two hundred forty".