72030632 has 16 divisors (see below), whose sum is σ = 143002260. Its totient is φ = 33896704.

The previous prime is 72030631. The next prime is 72030643. The reversal of 72030632 is 23603027.

It can be written as a sum of positive squares in 2 ways, for example, as 70324996 + 1705636 = 8386^2 + 1306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72030598 and 72030607.

It is not an unprimeable number, because it can be changed into a prime (72030631) 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, 264683 + ... + 264954.

Almost surely, 2^72030632 is an apocalyptic number.

It is an amenable number.

72030632 is a deficient number, since it is larger than the sum of its proper divisors (70971628).

72030632 is a wasteful number, since it uses less digits than its factorization.

72030632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529660 (or 529656 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 72030632 is about 8487.0861902069. The cubic root of 72030632 is about 416.0757535861.

Adding to 72030632 its reverse (23603027), we get a palindrome (95633659).

The spelling of 72030632 in words is "seventy-two million, thirty thousand, six hundred thirty-two".