2878417 has 4 divisors (see below), whose sum is σ = 2896240. Its totient is φ = 2860596.

The previous prime is 2878409. The next prime is 2878429. The reversal of 2878417 is 7148782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7148782 = 2 ⋅3574391.

It is a cyclic number.

It is not a de Polignac number, because 2878417 - 2³ = 2878409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2878717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8667 + ... + 8992.

It is an arithmetic number, because the mean of its divisors is an integer number (724060).

2^2878417 is an apocalyptic number.

It is an amenable number.

2878417 is a deficient number, since it is larger than the sum of its proper divisors (17823).

2878417 is a wasteful number, since it uses less digits than its factorization.

2878417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17822.

The product of its digits is 25088, while the sum is 37.

The square root of 2878417 is about 1696.5898148934. The cubic root of 2878417 is about 142.2496599850.

The spelling of 2878417 in words is "two million, eight hundred seventy-eight thousand, four hundred seventeen".