20393087 has 8 divisors (see below), whose sum is σ = 23958480. Its totient is φ = 17112960.

The previous prime is 20393053. The next prime is 20393101. The reversal of 20393087 is 78039302.

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 20393087 - 2⁸ = 20392831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20393027) 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, 71162 + ... + 71447.

It is an arithmetic number, because the mean of its divisors is an integer number (2994810).

Almost surely, 2^20393087 is an apocalyptic number.

20393087 is a deficient number, since it is larger than the sum of its proper divisors (3565393).

20393087 is a wasteful number, since it uses less digits than its factorization.

20393087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142633.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20393087 is about 4515.8705694473. The cubic root of 20393087 is about 273.2085736737.

The spelling of 20393087 in words is "twenty million, three hundred ninety-three thousand, eighty-seven".