72032620 has 24 divisors (see below), whose sum is σ = 165020688. Its totient is φ = 26193600.

The previous prime is 72032617. The next prime is 72032647. The reversal of 72032620 is 2623027.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 72032591 and 72032600.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 163491 + ... + 163930.

It is an arithmetic number, because the mean of its divisors is an integer number (6875862).

Almost surely, 2^72032620 is an apocalyptic number.

It is an amenable number.

72032620 is an abundant number, since it is smaller than the sum of its proper divisors (92988068).

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

72032620 is a wasteful number, since it uses less digits than its factorization.

72032620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327441 (or 327439 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 72032620 is about 8487.2033085110. The cubic root of 72032620 is about 416.0795813603.

Adding to 72032620 its reverse (2623027), we get a palindrome (74655647).

The spelling of 72032620 in words is "seventy-two million, thirty-two thousand, six hundred twenty".