20285495 has 8 divisors (see below), whose sum is σ = 24390384. Its totient is φ = 16196544.

The previous prime is 20285477. The next prime is 20285497. The reversal of 20285495 is 59458202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20285495 - 2⁶ = 20285431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20285497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (3048798).

Almost surely, 2^20285495 is an apocalyptic number.

20285495 is a deficient number, since it is larger than the sum of its proper divisors (4104889).

20285495 is an equidigital number, since it uses as much as digits as its factorization.

20285495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 20285495 is about 4503.9421621508. The cubic root of 20285495 is about 272.7272520034.

The spelling of 20285495 in words is "twenty million, two hundred eighty-five thousand, four hundred ninety-five".