2470778 has 4 divisors (see below), whose sum is σ = 3706170. Its totient is φ = 1235388.

The previous prime is 2470777. The next prime is 2470781. The reversal of 2470778 is 8770742.

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., 1776889 + 693889 = 1333^2 + 833^2 .

It is a super-2 number, since 2×2470778² = 12209487850568, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2470777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617693 + ... + 617696.

2^2470778 is an apocalyptic number.

2470778 is a deficient number, since it is larger than the sum of its proper divisors (1235392).

2470778 is a wasteful number, since it uses less digits than its factorization.

2470778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235391.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 2470778 is about 1571.8708598355. The cubic root of 2470778 is about 135.1900022368.

The spelling of 2470778 in words is "two million, four hundred seventy thousand, seven hundred seventy-eight".