2978471 has 4 divisors (see below), whose sum is σ = 2982000. Its totient is φ = 2974944.

The previous prime is 2978453. The next prime is 2978483. The reversal of 2978471 is 1748792.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2978471 - 2⁶ = 2978407 is a prime.

It is a super-3 number, since 3×2978471³ = 79268635505771943333, which contains 333 as substring.

It is a Duffinian number.

Its product of digits (28224) is a multiple of the sum of its prime divisors (3528).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 335 + ... + 2463.

It is an arithmetic number, because the mean of its divisors is an integer number (745500).

2^2978471 is an apocalyptic number.

2978471 is a deficient number, since it is larger than the sum of its proper divisors (3529).

2978471 is a wasteful number, since it uses less digits than its factorization.

2978471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528.

The product of its digits is 28224, while the sum is 38.

The square root of 2978471 is about 1725.8247303825. The cubic root of 2978471 is about 143.8791263190.

The spelling of 2978471 in words is "two million, nine hundred seventy-eight thousand, four hundred seventy-one".