2809948 has 12 divisors (see below), whose sum is σ = 5176360. Its totient is φ = 1330992.

The previous prime is 2809931. The next prime is 2809973. The reversal of 2809948 is 8499082.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2809948.

It is a congruent number.

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, 18411 + ... + 18562.

2^2809948 is an apocalyptic number.

It is an amenable number.

2809948 is a deficient number, since it is larger than the sum of its proper divisors (2366412).

2809948 is a wasteful number, since it uses less digits than its factorization.

2809948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36996 (or 36994 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2809948 is about 1676.2899510526. The cubic root of 2809948 is about 141.1126976535.

The spelling of 2809948 in words is "two million, eight hundred nine thousand, nine hundred forty-eight".