36861978 has 8 divisors (see below), whose sum is σ = 73723968. Its totient is φ = 12287324.

The previous prime is 36861971. The next prime is 36861983. The reversal of 36861978 is 87916863.

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

36861978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (36861971) 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 3 ways as a sum of consecutive naturals, for example, 3071826 + ... + 3071837.

It is an arithmetic number, because the mean of its divisors is an integer number (9215496).

Almost surely, 2^36861978 is an apocalyptic number.

36861978 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.

36861978 is a wasteful number, since it uses less digits than its factorization.

36861978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143668.

The product of its digits is 435456, while the sum is 48.

The square root of 36861978 is about 6071.4065915569. The cubic root of 36861978 is about 332.8073266096.

The spelling of 36861978 in words is "thirty-six million, eight hundred sixty-one thousand, nine hundred seventy-eight".