2145896 has 8 divisors (see below), whose sum is σ = 4023570. Its totient is φ = 1072944.

The previous prime is 2145853. The next prime is 2145937. The reversal of 2145896 is 6985412.

It can be written as a sum of positive squares in only one way, i.e., 1768900 + 376996 = 1330^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134111 + ... + 134126.

2^2145896 is an apocalyptic number.

It is an amenable number.

2145896 is a deficient number, since it is larger than the sum of its proper divisors (1877674).

2145896 is a wasteful number, since it uses less digits than its factorization.

2145896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268243 (or 268239 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 2145896 is about 1464.8877090071. The cubic root of 2145896 is about 128.9841135816.

The spelling of 2145896 in words is "two million, one hundred forty-five thousand, eight hundred ninety-six".