20774135 has 8 divisors (see below), whose sum is σ = 24968736. Its totient is φ = 16592800.

The previous prime is 20774101. The next prime is 20774147. The reversal of 20774135 is 53147702.

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

It is not a de Polignac number, because 20774135 - 2⁶ = 20774071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20774098 and 20774107.

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, 542 + ... + 6468.

It is an arithmetic number, because the mean of its divisors is an integer number (3121092).

Almost surely, 2^20774135 is an apocalyptic number.

20774135 is a deficient number, since it is larger than the sum of its proper divisors (4194601).

20774135 is an equidigital number, since it uses as much as digits as its factorization.

20774135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6633.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20774135 is about 4557.8651801035. The cubic root of 20774135 is about 274.8997320407.

The spelling of 20774135 in words is "twenty million, seven hundred seventy-four thousand, one hundred thirty-five".