2258878 has 4 divisors (see below), whose sum is σ = 3388320. Its totient is φ = 1129438.

The previous prime is 2258873. The next prime is 2258903. The reversal of 2258878 is 8788522.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2258878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2258873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564718 + ... + 564721.

It is an arithmetic number, because the mean of its divisors is an integer number (847080).

2^2258878 is an apocalyptic number.

2258878 is a deficient number, since it is larger than the sum of its proper divisors (1129442).

2258878 is a wasteful number, since it uses less digits than its factorization.

2258878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129441.

The product of its digits is 71680, while the sum is 40.

The square root of 2258878 is about 1502.9564198605. The cubic root of 2258878 is about 131.2091912434.

It can be divided in two parts, 2258 and 878, that added together give a square (3136 = 56²).

The spelling of 2258878 in words is "two million, two hundred fifty-eight thousand, eight hundred seventy-eight".