361637440 has 28 divisors (see below), whose sum is σ = 861149916. Its totient is φ = 144654848.

The previous prime is 361637407. The next prime is 361637449. The reversal of 361637440 is 44736163.

It can be written as a sum of positive squares in 2 ways, for example, as 41370624 + 320266816 = 6432^2 + 17896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 361637396 and 361637405.

It is not an unprimeable number, because it can be changed into a prime (361637449) 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, 564739 + ... + 565378.

Almost surely, 2^361637440 is an apocalyptic number.

It is an amenable number.

361637440 is an abundant number, since it is smaller than the sum of its proper divisors (499512476).

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

361637440 is a wasteful number, since it uses less digits than its factorization.

361637440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130134 (or 1130124 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 361637440 is about 19016.7673383254. The cubic root of 361637440 is about 712.4555852072.

The spelling of 361637440 in words is "three hundred sixty-one million, six hundred thirty-seven thousand, four hundred forty".