20773247 has 8 divisors (see below), whose sum is σ = 22703952. Its totient is φ = 18849600.

The previous prime is 20773241. The next prime is 20773253. The reversal of 20773247 is 74237702.

It is an interprime number because it is at equal distance from previous prime (20773241) and next prime (20773253).

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

It is not a de Polignac number, because 20773247 - 2⁴ = 20773231 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 (20773241) 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, 5843 + ... + 8699.

It is an arithmetic number, because the mean of its divisors is an integer number (2837994).

Almost surely, 2^20773247 is an apocalyptic number.

20773247 is a deficient number, since it is larger than the sum of its proper divisors (1930705).

20773247 is a wasteful number, since it uses less digits than its factorization.

20773247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 20773247 is about 4557.7677650359. The cubic root of 20773247 is about 274.8958150795.

The spelling of 20773247 in words is "twenty million, seven hundred seventy-three thousand, two hundred forty-seven".