32144420 has 48 divisors (see below), whose sum is σ = 84163968. Its totient is φ = 10018560.

The previous prime is 32144419. The next prime is 32144443. The reversal of 32144420 is 2444123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 32144392 and 32144401.

It is an unprimeable number.

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, 8897 + ... + 11976.

It is an arithmetic number, because the mean of its divisors is an integer number (1753416).

Almost surely, 2^32144420 is an apocalyptic number.

It is an amenable number.

32144420 is an abundant number, since it is smaller than the sum of its proper divisors (52019548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32144420 is a wasteful number, since it uses less digits than its factorization.

32144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20900 (or 20898 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 32144420 is about 5669.6049245075. The cubic root of 32144420 is about 317.9571029778.

Adding to 32144420 its reverse (2444123), we get a palindrome (34588543).

The spelling of 32144420 in words is "thirty-two million, one hundred forty-four thousand, four hundred twenty".