20846137 has 8 divisors (see below), whose sum is σ = 22514240. Its totient is φ = 19187280.

The previous prime is 20846129. The next prime is 20846153. The reversal of 20846137 is 73164802.

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 20846137 - 2³ = 20846129 is a prime.

It is a super-2 number, since 2×20846137² = 869122855645538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20846099 and 20846108.

It is not an unprimeable number, because it can be changed into a prime (20846107) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2812 + ... + 7042.

It is an arithmetic number, because the mean of its divisors is an integer number (2814280).

Almost surely, 2^20846137 is an apocalyptic number.

It is an amenable number.

20846137 is a deficient number, since it is larger than the sum of its proper divisors (1668103).

20846137 is a wasteful number, since it uses less digits than its factorization.

20846137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20846137 is about 4565.7570018563. The cubic root of 20846137 is about 275.2169615653.

The spelling of 20846137 in words is "twenty million, eight hundred forty-six thousand, one hundred thirty-seven".