2829978 has 32 divisors (see below), whose sum is σ = 6376320. Its totient is φ = 941868.

The previous prime is 2829977. The next prime is 2830027. The reversal of 2829978 is 8799282.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2829977) 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, 4051 + ... + 4697.

It is an arithmetic number, because the mean of its divisors is an integer number (199260).

2^2829978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2829978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188160).

2829978 is an abundant number, since it is smaller than the sum of its proper divisors (3546342).

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

2829978 is an frugal number, since it uses more digits than its factorization.

2829978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 652 counting only the distinct ones).

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

The square root of 2829978 is about 1682.2538452921. The cubic root of 2829978 is about 141.4471994354.

The spelling of 2829978 in words is "two million, eight hundred twenty-nine thousand, nine hundred seventy-eight".