2978238 has 16 divisors (see below), whose sum is σ = 6013440. Its totient is φ = 983256.

The previous prime is 2978233. The next prime is 2978251. The reversal of 2978238 is 8328792.

It is a junction number, because it is equal to n+sod(n) for n = 2978196 and 2978205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678 + ... + 2961.

It is an arithmetic number, because the mean of its divisors is an integer number (375840).

2^2978238 is an apocalyptic number.

2978238 is an abundant number, since it is smaller than the sum of its proper divisors (3035202).

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

2978238 is a wasteful number, since it uses less digits than its factorization.

2978238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751.

The product of its digits is 48384, while the sum is 39.

The square root of 2978238 is about 1725.7572251044. The cubic root of 2978238 is about 143.8753744263.

The spelling of 2978238 in words is "two million, nine hundred seventy-eight thousand, two hundred thirty-eight".