2978725 has 12 divisors (see below), whose sum is σ = 3888640. Its totient is φ = 2257200.

The previous prime is 2978713. The next prime is 2978737. The reversal of 2978725 is 5278792.

It is an interprime number because it is at equal distance from previous prime (2978713) and next prime (2978737).

It is not a de Polignac number, because 2978725 - 2¹³ = 2970533 is a prime.

2978725 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2661 + ... + 3610.

2^2978725 is an apocalyptic number.

2978725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2978725 is a deficient number, since it is larger than the sum of its proper divisors (909915).

2978725 is a wasteful number, since it uses less digits than its factorization.

2978725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6300 (or 6295 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 2978725 is about 1725.8983168194. The cubic root of 2978725 is about 143.8832161422.

The spelling of 2978725 in words is "two million, nine hundred seventy-eight thousand, seven hundred twenty-five".