20850495 has 16 divisors (see below), whose sum is σ = 33474912. Its totient is φ = 11082240.

The previous prime is 20850491. The next prime is 20850521. The reversal of 20850495 is 59405802.

It is not a de Polignac number, because 20850495 - 2² = 20850491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2475 + ... + 6915.

It is an arithmetic number, because the mean of its divisors is an integer number (2092182).

Almost surely, 2^20850495 is an apocalyptic number.

20850495 is a deficient number, since it is larger than the sum of its proper divisors (12624417).

20850495 is a wasteful number, since it uses less digits than its factorization.

20850495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 20850495 is about 4566.2342252670. The cubic root of 20850495 is about 275.2361387706.

The spelling of 20850495 in words is "twenty million, eight hundred fifty thousand, four hundred ninety-five".