20973935 has 8 divisors (see below), whose sum is σ = 25581696. Its totient is φ = 16503840.

The previous prime is 20973913. The next prime is 20973943. The reversal of 20973935 is 53937902.

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

It is not a de Polignac number, because 20973935 - 2⁶ = 20973871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34079 + ... + 34688.

It is an arithmetic number, because the mean of its divisors is an integer number (3197712).

Almost surely, 2^20973935 is an apocalyptic number.

20973935 is a deficient number, since it is larger than the sum of its proper divisors (4607761).

20973935 is an equidigital number, since it uses as much as digits as its factorization.

20973935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68833.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 20973935 is about 4579.7308872902. The cubic root of 20973935 is about 275.7782253665.

The spelling of 20973935 in words is "twenty million, nine hundred seventy-three thousand, nine hundred thirty-five".