20262845 has 8 divisors (see below), whose sum is σ = 24421176. Its totient is φ = 16139776.

The previous prime is 20262833. The next prime is 20262857. The reversal of 20262845 is 54826202.

It is an interprime number because it is at equal distance from previous prime (20262833) and next prime (20262857).

It can be written as a sum of positive squares in 4 ways, for example, as 3844 + 20259001 = 62^2 + 4501^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20262845 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7532 + ... + 9861.

It is an arithmetic number, because the mean of its divisors is an integer number (3052647).

Almost surely, 2^20262845 is an apocalyptic number.

It is an amenable number.

20262845 is a deficient number, since it is larger than the sum of its proper divisors (4158331).

20262845 is a wasteful number, since it uses less digits than its factorization.

20262845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17631.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 20262845 is about 4501.4269959647. The cubic root of 20262845 is about 272.6257086299.

The spelling of 20262845 in words is "twenty million, two hundred sixty-two thousand, eight hundred forty-five".