2145364 has 12 divisors (see below), whose sum is σ = 4043284. Its totient is φ = 990144.

The previous prime is 2145361. The next prime is 2145379. The reversal of 2145364 is 4635412.

2145364 = T₃₁₂ + T₃₁₃ + ... + T₃₅₀.

It can be written as a sum of positive squares in 2 ways, for example, as 476100 + 1669264 = 690^2 + 1292^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20577 + ... + 20680.

2^2145364 is an apocalyptic number.

It is an amenable number.

2145364 is a deficient number, since it is larger than the sum of its proper divisors (1897920).

2145364 is a wasteful number, since it uses less digits than its factorization.

2145364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41274 (or 41272 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 2145364 is about 1464.7061138672. The cubic root of 2145364 is about 128.9734536646.

The spelling of 2145364 in words is "two million, one hundred forty-five thousand, three hundred sixty-four".