2721478 has 8 divisors (see below), whose sum is σ = 4102200. Its totient is φ = 1354080.

The previous prime is 2721451. The next prime is 2721517. The reversal of 2721478 is 8741272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

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, 2803 + ... + 3646.

It is an arithmetic number, because the mean of its divisors is an integer number (512775).

2^2721478 is an apocalyptic number.

2721478 is a deficient number, since it is larger than the sum of its proper divisors (1380722).

2721478 is a wasteful number, since it uses less digits than its factorization.

2721478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662.

The product of its digits is 6272, while the sum is 31.

The square root of 2721478 is about 1649.6902739605. The cubic root of 2721478 is about 139.6159200570.

The spelling of 2721478 in words is "two million, seven hundred twenty-one thousand, four hundred seventy-eight".