2445778 has 4 divisors (see below), whose sum is σ = 3668670. Its totient is φ = 1222888.

The previous prime is 2445769. The next prime is 2445799. The reversal of 2445778 is 8775442.

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

It can be written as a sum of positive squares in only one way, i.e., 2442969 + 2809 = 1563^2 + 53^2 .

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611443 + ... + 611446.

2^2445778 is an apocalyptic number.

2445778 is a deficient number, since it is larger than the sum of its proper divisors (1222892).

2445778 is a wasteful number, since it uses less digits than its factorization.

2445778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222891.

The product of its digits is 62720, while the sum is 37.

The square root of 2445778 is about 1563.8983342916. The cubic root of 2445778 is about 134.7324926799.

It can be divided in two parts, 2445 and 778, that added together give a palindrome (3223).

The spelling of 2445778 in words is "two million, four hundred forty-five thousand, seven hundred seventy-eight".