20302087 has 8 divisors (see below), whose sum is σ = 21917504. Its totient is φ = 18694368.

The previous prime is 20302067. The next prime is 20302091. The reversal of 20302087 is 78020302.

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 20302087 - 2¹¹ = 20300039 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 (20302027) 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, 4333 + ... + 7705.

It is an arithmetic number, because the mean of its divisors is an integer number (2739688).

Almost surely, 2^20302087 is an apocalyptic number.

20302087 is a deficient number, since it is larger than the sum of its proper divisors (1615417).

20302087 is a wasteful number, since it uses less digits than its factorization.

20302087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20302087 is about 4505.7837276105. The cubic root of 20302087 is about 272.8015884919.

Adding to 20302087 its reverse (78020302), we get a palindrome (98322389).

The spelling of 20302087 in words is "twenty million, three hundred two thousand, eighty-seven".