20031464 has 16 divisors (see below), whose sum is σ = 38433120. Its totient is φ = 9782640.

The previous prime is 20031463. The next prime is 20031481. The reversal of 20031464 is 46413002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20031461) 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 3 ways as a sum of consecutive naturals, for example, 28772 + ... + 29459.

It is an arithmetic number, because the mean of its divisors is an integer number (2402070).

Almost surely, 2^20031464 is an apocalyptic number.

It is an amenable number.

20031464 is a deficient number, since it is larger than the sum of its proper divisors (18401656).

20031464 is a wasteful number, since it uses less digits than its factorization.

20031464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58280 (or 58276 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20031464 is about 4475.6523546853. The cubic root of 20031464 is about 271.5840311393.

Adding to 20031464 its reverse (46413002), we get a palindrome (66444466).

It can be divided in two parts, 2003 and 1464, that multiplied together give a palindrome (2932392).

The spelling of 20031464 in words is "twenty million, thirty-one thousand, four hundred sixty-four".