2645402 has 8 divisors (see below), whose sum is σ = 4065012. Its totient is φ = 1290400.

The previous prime is 2645399. The next prime is 2645413. The reversal of 2645402 is 2045462.

2645402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1990921 + 654481 = 1411^2 + 809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16049 + ... + 16212.

2^2645402 is an apocalyptic number.

2645402 is a deficient number, since it is larger than the sum of its proper divisors (1419610).

2645402 is a wasteful number, since it uses less digits than its factorization.

2645402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32304.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2645402 is about 1626.4691820013. The cubic root of 2645402 is about 138.3026683210.

The spelling of 2645402 in words is "two million, six hundred forty-five thousand, four hundred two".