361621536 has 24 divisors (see below), whose sum is σ = 949256784. Its totient is φ = 120540480.

The previous prime is 361621523. The next prime is 361621537. The reversal of 361621536 is 635126163.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 361621497 and 361621506.

It is not an unprimeable number, because it can be changed into a prime (361621537) 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, 1883350 + ... + 1883541.

It is an arithmetic number, because the mean of its divisors is an integer number (39552366).

Almost surely, 2^361621536 is an apocalyptic number.

It is an amenable number.

361621536 is an abundant number, since it is smaller than the sum of its proper divisors (587635248).

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

361621536 is a wasteful number, since it uses less digits than its factorization.

361621536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766904 (or 3766896 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 361621536 is about 19016.3491764324. The cubic root of 361621536 is about 712.4451409901.

Adding to 361621536 its reverse (635126163), we get a palindrome (996747699).

It can be divided in two parts, 3616 and 21536, that added together give a palindrome (25152).

The spelling of 361621536 in words is "three hundred sixty-one million, six hundred twenty-one thousand, five hundred thirty-six".