2787428 has 12 divisors (see below), whose sum is σ = 5574912. Its totient is φ = 1194600.

The previous prime is 2787419. The next prime is 2787443. The reversal of 2787428 is 8247872.

2787428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

2787428 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2787391 and 2787400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49748 + ... + 49803.

It is an arithmetic number, because the mean of its divisors is an integer number (464576).

2^2787428 is an apocalyptic number.

2787428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2787428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2787428 is a wasteful number, since it uses less digits than its factorization.

2787428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99562 (or 99560 counting only the distinct ones).

The product of its digits is 50176, while the sum is 38.

The square root of 2787428 is about 1669.5592232682. The cubic root of 2787428 is about 140.7347089888.

The spelling of 2787428 in words is "two million, seven hundred eighty-seven thousand, four hundred twenty-eight".