2978508 has 48 divisors (see below), whose sum is σ = 7631456. Its totient is φ = 898560.

The previous prime is 2978501. The next prime is 2978533. The reversal of 2978508 is 8058792.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2978501) 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, 9360 + ... + 9672.

2^2978508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2978508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3815728).

2978508 is an abundant number, since it is smaller than the sum of its proper divisors (4652948).

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

2978508 is a wasteful number, since it uses less digits than its factorization.

2978508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 2978508 is about 1725.8354498619. The cubic root of 2978508 is about 143.8797220951.

It can be divided in two parts, 2978 and 508, that added together give a triangular number (3486 = T₈₃).

The spelling of 2978508 in words is "two million, nine hundred seventy-eight thousand, five hundred eight".