20339046 has 64 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 5362848.

The previous prime is 20339029. The next prime is 20339051. The reversal of 20339046 is 64093302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2845 + ... + 6983.

It is an arithmetic number, because the mean of its divisors is an integer number (869400).

Almost surely, 2^20339046 is an apocalyptic number.

20339046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20339046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27820800).

20339046 is an abundant number, since it is smaller than the sum of its proper divisors (35302554).

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

20339046 is a wasteful number, since it uses less digits than its factorization.

20339046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170 (or 4164 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20339046 is about 4509.8831470449. The cubic root of 20339046 is about 272.9670289852.

The spelling of 20339046 in words is "twenty million, three hundred thirty-nine thousand, forty-six".