36080721 has 40 divisors (see below), whose sum is σ = 57081024. Its totient is φ = 22667040.

The previous prime is 36080719. The next prime is 36080729. The reversal of 36080721 is 12708063.

It is not a de Polignac number, because 36080721 - 2¹ = 36080719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (36080729) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 199251 + ... + 199431.

Almost surely, 2^36080721 is an apocalyptic number.

It is an amenable number.

36080721 is a deficient number, since it is larger than the sum of its proper divisors (21000303).

36080721 is a wasteful number, since it uses less digits than its factorization.

36080721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 36080721 is about 6006.7229834578. The cubic root of 36080721 is about 330.4393322086.

Adding to 36080721 its reverse (12708063), we get a palindrome (48788784).

The spelling of 36080721 in words is "thirty-six million, eighty thousand, seven hundred twenty-one".