36242721 has 48 divisors (see below), whose sum is σ = 58094400. Its totient is φ = 22534848.

The previous prime is 36242711. The next prime is 36242753. The reversal of 36242721 is 12724263.

It is not a de Polignac number, because 36242721 - 2⁹ = 36242209 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 (36242711) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260670 + ... + 260808.

It is an arithmetic number, because the mean of its divisors is an integer number (1210300).

Almost surely, 2^36242721 is an apocalyptic number.

It is an amenable number.

36242721 is a deficient number, since it is larger than the sum of its proper divisors (21851679).

36242721 is a wasteful number, since it uses less digits than its factorization.

36242721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 208 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 36242721 is about 6020.1927709999. The cubic root of 36242721 is about 330.9331439772.

Adding to 36242721 its reverse (12724263), we get a palindrome (48966984).

It can be divided in two parts, 36242 and 721, that added together give a palindrome (36963).

The spelling of 36242721 in words is "thirty-six million, two hundred forty-two thousand, seven hundred twenty-one".