2772155340 has 60 divisors (see below), whose sum is σ = 8696359056. Its totient is φ = 739240992.

The previous prime is 2772155291. The next prime is 2772155359. The reversal of 2772155340 is 435512772.

It is a tau number, because it is divible by the number of its divisors (60).

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 = 2772155295 and 2772155304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 853984 + ... + 857223.

Almost surely, 2^2772155340 is an apocalyptic number.

2772155340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2772155340 is an abundant number, since it is smaller than the sum of its proper divisors (5924203716).

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

2772155340 is a wasteful number, since it uses less digits than its factorization.

2772155340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711228 (or 1711217 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 2772155340 is about 52651.2615233481. The cubic root of 2772155340 is about 1404.7720386813.

The spelling of 2772155340 in words is "two billion, seven hundred seventy-two million, one hundred fifty-five thousand, three hundred forty".