20102437 has 16 divisors (see below), whose sum is σ = 22296960. Its totient is φ = 18038592.

The previous prime is 20102431. The next prime is 20102441. The reversal of 20102437 is 73420102.

It is a cyclic number.

It is not a de Polignac number, because 20102437 - 2⁷ = 20102309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68463 + ... + 68755.

It is an arithmetic number, because the mean of its divisors is an integer number (1393560).

Almost surely, 2^20102437 is an apocalyptic number.

It is an amenable number.

20102437 is a deficient number, since it is larger than the sum of its proper divisors (2194523).

20102437 is a wasteful number, since it uses less digits than its factorization.

20102437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20102437 is about 4483.5741323190. The cubic root of 20102437 is about 271.9044006959.

Adding to 20102437 its reverse (73420102), we get a palindrome (93522539).

The spelling of 20102437 in words is "twenty million, one hundred two thousand, four hundred thirty-seven".