2408778 has 20 divisors (see below), whose sum is σ = 5397810. Its totient is φ = 802872.

The previous prime is 2408773. The next prime is 2408837. The reversal of 2408778 is 8778042.

It can be written as a sum of positive squares in only one way, i.e., 2259009 + 149769 = 1503^2 + 387^2 .

It is a super-2 number, since 2×2408778² = 11604422906568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2408771) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7273 + ... + 7596.

2^2408778 is an apocalyptic number.

2408778 is an abundant number, since it is smaller than the sum of its proper divisors (2989032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2408778 is a wasteful number, since it uses less digits than its factorization.

2408778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14883 (or 14874 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2408778 is about 1552.0238400231. The cubic root of 2408778 is about 134.0496214828.

The spelling of 2408778 in words is "two million, four hundred eight thousand, seven hundred seventy-eight".