20248237 has 4 divisors (see below), whose sum is σ = 20274016. Its totient is φ = 20222460.

The previous prime is 20248223. The next prime is 20248247. The reversal of 20248237 is 73284202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20248237 - 2¹¹ = 20246189 is a prime.

It is a super-2 number, since 2×20248237² = 819982203216338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20248247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11673 + ... + 13294.

It is an arithmetic number, because the mean of its divisors is an integer number (5068504).

Almost surely, 2^20248237 is an apocalyptic number.

It is an amenable number.

20248237 is a deficient number, since it is larger than the sum of its proper divisors (25779).

20248237 is an equidigital number, since it uses as much as digits as its factorization.

20248237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25778.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20248237 is about 4499.8041068473. The cubic root of 20248237 is about 272.5601786123.

The spelling of 20248237 in words is "twenty million, two hundred forty-eight thousand, two hundred thirty-seven".