2788401 has 16 divisors (see below), whose sum is σ = 4635648. Its totient is φ = 1448400.

The previous prime is 2788393. The next prime is 2788403. The reversal of 2788401 is 1048872.

It is not a de Polignac number, because 2788401 - 2³ = 2788393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2788403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5805 + ... + 6266.

It is an arithmetic number, because the mean of its divisors is an integer number (289728).

2^2788401 is an apocalyptic number.

2788401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2788401 is a deficient number, since it is larger than the sum of its proper divisors (1847247).

2788401 is a wasteful number, since it uses less digits than its factorization.

2788401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12092.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 2788401 is about 1669.8505921189. The cubic root of 2788401 is about 140.7510823793.

The spelling of 2788401 in words is "two million, seven hundred eighty-eight thousand, four hundred one".