32820978 has 8 divisors (see below), whose sum is σ = 65641968. Its totient is φ = 10940324.

The previous prime is 32820973. The next prime is 32820979. The reversal of 32820978 is 87902823.

It is a sphenic number, since it is the product of 3 distinct primes.

32820978 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32820973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735076 + ... + 2735087.

It is an arithmetic number, because the mean of its divisors is an integer number (8205246).

Almost surely, 2^32820978 is an apocalyptic number.

32820978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

32820978 is a wasteful number, since it uses less digits than its factorization.

32820978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470168.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 32820978 is about 5728.9595914092. The cubic root of 32820978 is about 320.1723615713.

The spelling of 32820978 in words is "thirty-two million, eight hundred twenty thousand, nine hundred seventy-eight".