2776428 has 36 divisors (see below), whose sum is σ = 7069608. Its totient is φ = 918720.

The previous prime is 2776427. The next prime is 2776439. The reversal of 2776428 is 8246772.

2776428 is a `hidden beast` number, since 2 + 7 + 7 + 642 + 8 = 666.

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 junction number, because it is equal to n+sod(n) for n = 2776392 and 2776401.

It is not an unprimeable number, because it can be changed into a prime (2776421) 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, 8223 + ... + 8553.

It is an arithmetic number, because the mean of its divisors is an integer number (196378).

2^2776428 is an apocalyptic number.

It is an amenable number.

2776428 is an abundant number, since it is smaller than the sum of its proper divisors (4293180).

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

2776428 is a wasteful number, since it uses less digits than its factorization.

2776428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 569 counting only the distinct ones).

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

The square root of 2776428 is about 1666.2616841301. The cubic root of 2776428 is about 140.5493382613.

The spelling of 2776428 in words is "two million, seven hundred seventy-six thousand, four hundred twenty-eight".