2145276 has 36 divisors (see below), whose sum is σ = 6198192. Its totient is φ = 612864.

The previous prime is 2145263. The next prime is 2145277. The reversal of 2145276 is 6725412.

It is a tau number, because it is divible by the number of its divisors (36).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145277) 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 in 11 ways as a sum of consecutive naturals, for example, 4005 + ... + 4508.

It is an arithmetic number, because the mean of its divisors is an integer number (172172).

2^2145276 is an apocalyptic number.

It is an amenable number.

2145276 is an abundant number, since it is smaller than the sum of its proper divisors (4052916).

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

2145276 is a wasteful number, since it uses less digits than its factorization.

2145276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530 (or 8525 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2145276 is about 1464.6760734033. The cubic root of 2145276 is about 128.9716902002.

It can be divided in two parts, 21452 and 76, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 2145276 in words is "two million, one hundred forty-five thousand, two hundred seventy-six".