20765942 has 8 divisors (see below), whose sum is σ = 32981256. Its totient is φ = 9772192.

The previous prime is 20765929. The next prime is 20765957. The reversal of 20765942 is 24956702.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305348 + ... + 305415.

It is an arithmetic number, because the mean of its divisors is an integer number (4122657).

Almost surely, 2^20765942 is an apocalyptic number.

20765942 is a deficient number, since it is larger than the sum of its proper divisors (12215314).

20765942 is a wasteful number, since it uses less digits than its factorization.

20765942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610782.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 20765942 is about 4556.9663154340. The cubic root of 20765942 is about 274.8635885438.

The spelling of 20765942 in words is "twenty million, seven hundred sixty-five thousand, nine hundred forty-two".