20413437 has 8 divisors (see below), whose sum is σ = 29692320. Its totient is φ = 12371760.

The previous prime is 20413409. The next prime is 20413441. The reversal of 20413437 is 73431402.

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

It is not a de Polignac number, because 20413437 - 2¹⁸ = 20151293 is a prime.

It is a super-3 number, since 3×20413437³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309262 + ... + 309327.

It is an arithmetic number, because the mean of its divisors is an integer number (3711540).

Almost surely, 2^20413437 is an apocalyptic number.

It is an amenable number.

20413437 is a deficient number, since it is larger than the sum of its proper divisors (9278883).

20413437 is a wasteful number, since it uses less digits than its factorization.

20413437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618603.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20413437 is about 4518.1231722918. The cubic root of 20413437 is about 273.2994205728.

Adding to 20413437 its reverse (73431402), we get a palindrome (93844839).

The spelling of 20413437 in words is "twenty million, four hundred thirteen thousand, four hundred thirty-seven".