20473237 has 8 divisors (see below), whose sum is σ = 21220352. Its totient is φ = 19731600.

The previous prime is 20473231. The next prime is 20473261. The reversal of 20473237 is 73237402.

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

It is a cyclic number.

It is not a de Polignac number, because 20473237 - 2⁷ = 20473109 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 (20473231) 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, 7183 + ... + 9619.

It is an arithmetic number, because the mean of its divisors is an integer number (2652544).

Almost surely, 2^20473237 is an apocalyptic number.

It is an amenable number.

20473237 is a deficient number, since it is larger than the sum of its proper divisors (747115).

20473237 is a wasteful number, since it uses less digits than its factorization.

20473237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 20473237 is about 4524.7361249028. The cubic root of 20473237 is about 273.5660320919.

It can be divided in two parts, 204 and 73237, that added together give a square (73441 = 271²).

The spelling of 20473237 in words is "twenty million, four hundred seventy-three thousand, two hundred thirty-seven".