35985978 has 128 divisors (see below), whose sum is σ = 98058240. Its totient is φ = 9564480.

The previous prime is 35985977. The next prime is 35986021. The reversal of 35985978 is 87958953.

It is a super-2 number, since 2×35985978² = 2589981225232968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (35985977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 433525 + ... + 433607.

It is an arithmetic number, because the mean of its divisors is an integer number (766080).

Almost surely, 2^35985978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 35985978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49029120).

35985978 is an abundant number, since it is smaller than the sum of its proper divisors (62072262).

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

35985978 is a wasteful number, since it uses less digits than its factorization.

35985978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 163 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 35985978 is about 5998.8313861951. The cubic root of 35985978 is about 330.1498493002.

It can be divided in two parts, 35985 and 978, that added together give a palindrome (36963).

The spelling of 35985978 in words is "thirty-five million, nine hundred eighty-five thousand, nine hundred seventy-eight".