2774545380 has 96 divisors (see below), whose sum is σ = 8679914880. Its totient is φ = 735765120.

The previous prime is 2774545379. The next prime is 2774545393. The reversal of 2774545380 is 835454772.

2774545380 is a `hidden beast` number, since 2 + 7 + 74 + 545 + 38 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 83547 + ... + 111933.

It is an arithmetic number, because the mean of its divisors is an integer number (90415780).

Almost surely, 2^2774545380 is an apocalyptic number.

2774545380 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 2774545380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4339957440).

2774545380 is an abundant number, since it is smaller than the sum of its proper divisors (5905369500).

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

2774545380 is a wasteful number, since it uses less digits than its factorization.

2774545380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28586 (or 28578 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The square root of 2774545380 is about 52673.9535254380. The cubic root of 2774545380 is about 1405.1756352244.

The spelling of 2774545380 in words is "two billion, seven hundred seventy-four million, five hundred forty-five thousand, three hundred eighty".