20862942 has 8 divisors (see below), whose sum is σ = 41725896. Its totient is φ = 6954312.

The previous prime is 20862923. The next prime is 20862943. The reversal of 20862942 is 24926802.

It is a sphenic number, since it is the product of 3 distinct primes.

20862942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20862943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1738573 + ... + 1738584.

It is an arithmetic number, because the mean of its divisors is an integer number (5215737).

Almost surely, 2^20862942 is an apocalyptic number.

20862942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20862942 is a wasteful number, since it uses less digits than its factorization.

20862942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477162.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20862942 is about 4567.5969612040. The cubic root of 20862942 is about 275.2908965871.

The spelling of 20862942 in words is "twenty million, eight hundred sixty-two thousand, nine hundred forty-two".