20896386 has 32 divisors (see below), whose sum is σ = 48082560. Its totient is φ = 5930496.

The previous prime is 20896367. The next prime is 20896411. The reversal of 20896386 is 68369802.

20896386 = 284² + 285² + ... + 440².

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5010 + ... + 8178.

It is an arithmetic number, because the mean of its divisors is an integer number (1502580).

Almost surely, 2^20896386 is an apocalyptic number.

20896386 is an abundant number, since it is smaller than the sum of its proper divisors (27186174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20896386 is a wasteful number, since it uses less digits than its factorization.

20896386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 20896386 is about 4571.2565012259. The cubic root of 20896386 is about 275.4379182536.

The spelling of 20896386 in words is "twenty million, eight hundred ninety-six thousand, three hundred eighty-six".