20241865 has 16 divisors (see below), whose sum is σ = 27929088. Its totient is φ = 13795776.

The previous prime is 20241847. The next prime is 20241877. The reversal of 20241865 is 56814202.

It is a cyclic number.

It is not a de Polignac number, because 20241865 - 2⁵ = 20241833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4384 + ... + 7726.

It is an arithmetic number, because the mean of its divisors is an integer number (1745568).

Almost surely, 2^20241865 is an apocalyptic number.

It is an amenable number.

20241865 is a deficient number, since it is larger than the sum of its proper divisors (7687223).

20241865 is a wasteful number, since it uses less digits than its factorization.

20241865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20241865 is about 4499.0960203134. The cubic root of 20241865 is about 272.5315845891.

The spelling of 20241865 in words is "twenty million, two hundred forty-one thousand, eight hundred sixty-five".