20412351 has 16 divisors (see below), whose sum is σ = 30392320. Its totient is φ = 13539960.

The previous prime is 20412349. The next prime is 20412377. The reversal of 20412351 is 15321402.

It is not a de Polignac number, because 20412351 - 2¹ = 20412349 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412151) 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 15 ways as a sum of consecutive naturals, for example, 3906 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (1899520).

Almost surely, 2^20412351 is an apocalyptic number.

20412351 is a deficient number, since it is larger than the sum of its proper divisors (9979969).

20412351 is a wasteful number, since it uses less digits than its factorization.

20412351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803 (or 3797 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20412351 is about 4518.0029880468. The cubic root of 20412351 is about 273.2945739541.

Adding to 20412351 its reverse (15321402), we get a palindrome (35733753).

The spelling of 20412351 in words is "twenty million, four hundred twelve thousand, three hundred fifty-one".