36641840 has 40 divisors (see below), whose sum is σ = 87501840. Its totient is φ = 14259456.

The previous prime is 36641833. The next prime is 36641849. The reversal of 36641840 is 4814663.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 36641797 and 36641806.

It is not an unprimeable number, because it can be changed into a prime (36641849) 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 7 ways as a sum of consecutive naturals, for example, 3230 + ... + 9149.

It is an arithmetic number, because the mean of its divisors is an integer number (2187546).

Almost surely, 2^36641840 is an apocalyptic number.

It is an amenable number.

36641840 is an abundant number, since it is smaller than the sum of its proper divisors (50860000).

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

36641840 is a wasteful number, since it uses less digits than its factorization.

36641840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12429 (or 12423 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 36641840 is about 6053.2503665386. The cubic root of 36641840 is about 332.1435001667.

The spelling of 36641840 in words is "thirty-six million, six hundred forty-one thousand, eight hundred forty".