32285978 has 16 divisors (see below), whose sum is σ = 52357920. Its totient is φ = 14879376.

The previous prime is 32285971. The next prime is 32285989. The reversal of 32285978 is 87958223.

It is a super-4 number, since 4×32285978⁴ (a number of 31 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (32285971) 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 7 ways as a sum of consecutive naturals, for example, 10076 + ... + 12887.

It is an arithmetic number, because the mean of its divisors is an integer number (3272370).

Almost surely, 2^32285978 is an apocalyptic number.

32285978 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

32285978 is a deficient number, since it is larger than the sum of its proper divisors (20071942).

32285978 is a wasteful number, since it uses less digits than its factorization.

32285978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23021.

The product of its digits is 241920, while the sum is 44.

The square root of 32285978 is about 5682.0751490983. The cubic root of 32285978 is about 318.4231606617.

The spelling of 32285978 in words is "thirty-two million, two hundred eighty-five thousand, nine hundred seventy-eight".