2788929 has 36 divisors (see below), whose sum is σ = 4792788. Its totient is φ = 1552320.

The previous prime is 2788927. The next prime is 2788939. The reversal of 2788929 is 9298872.

It can be written as a sum of positive squares in 2 ways, for example, as 1742400 + 1046529 = 1320^2 + 1023^2 .

It is not a de Polignac number, because 2788929 - 2¹ = 2788927 is a prime.

Its product of digits (145152) is a multiple of the sum of its prime divisors (224).

It is not an unprimeable number, because it can be changed into a prime (2788927) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14059 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (133133).

2^2788929 is an apocalyptic number.

It is an amenable number.

2788929 is a deficient number, since it is larger than the sum of its proper divisors (2003859).

2788929 is a wasteful number, since it uses less digits than its factorization.

2788929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 224 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2788929 is about 1670.0086826122. The cubic root of 2788929 is about 140.7599658316.

The spelling of 2788929 in words is "two million, seven hundred eighty-eight thousand, nine hundred twenty-nine".