20713375 has 8 divisors (see below), whose sum is σ = 25850448. Its totient is φ = 16570600.

The previous prime is 20713373. The next prime is 20713387. The reversal of 20713375 is 57331702.

It is not a de Polignac number, because 20713375 - 2¹ = 20713373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82729 + ... + 82978.

It is an arithmetic number, because the mean of its divisors is an integer number (3231306).

Almost surely, 2^20713375 is an apocalyptic number.

20713375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20713375 is a deficient number, since it is larger than the sum of its proper divisors (5137073).

20713375 is an equidigital number, since it uses as much as digits as its factorization.

20713375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165722 (or 165712 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 20713375 is about 4551.1948980460. The cubic root of 20713375 is about 274.6314622523.

The spelling of 20713375 in words is "twenty million, seven hundred thirteen thousand, three hundred seventy-five".