72004030 has 48 divisors (see below), whose sum is σ = 157347360. Its totient is φ = 23610048.

The previous prime is 72004021. The next prime is 72004033. The reversal of 72004030 is 3040027.

It is a junction number, because it is equal to n+sod(n) for n = 72003995 and 72004013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72004033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8076 + ... + 14464.

It is an arithmetic number, because the mean of its divisors is an integer number (3278070).

Almost surely, 2^72004030 is an apocalyptic number.

72004030 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72004030 is an abundant number, since it is smaller than the sum of its proper divisors (85343330).

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

72004030 is a wasteful number, since it uses less digits than its factorization.

72004030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433 (or 6426 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 72004030 is about 8485.5188409431. The cubic root of 72004030 is about 416.0245262598.

Adding to 72004030 its reverse (3040027), we get a palindrome (75044057).

The spelling of 72004030 in words is "seventy-two million, four thousand, thirty".