32161420 has 24 divisors (see below), whose sum is σ = 69111504. Its totient is φ = 12565056.

The previous prime is 32161411. The next prime is 32161427. The reversal of 32161420 is 2416123.

It is not an unprimeable number, because it can be changed into a prime (32161427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17839 + ... + 19558.

It is an arithmetic number, because the mean of its divisors is an integer number (2879646).

Almost surely, 2^32161420 is an apocalyptic number.

It is an amenable number.

32161420 is an abundant number, since it is smaller than the sum of its proper divisors (36950084).

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

32161420 is a wasteful number, since it uses less digits than its factorization.

32161420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37449 (or 37447 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 32161420 is about 5671.1039489680. The cubic root of 32161420 is about 318.0131450337.

Adding to 32161420 its reverse (2416123), we get a palindrome (34577543).

The spelling of 32161420 in words is "thirty-two million, one hundred sixty-one thousand, four hundred twenty".