72002238 has 32 divisors (see below), whose sum is σ = 179539200. Its totient is φ = 18701760.

The previous prime is 72002237. The next prime is 72002257. The reversal of 72002238 is 83220027.

It is a plaindrome in base 16.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72002237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77463 + ... + 78386.

It is an arithmetic number, because the mean of its divisors is an integer number (5610600).

Almost surely, 2^72002238 is an apocalyptic number.

72002238 is an abundant number, since it is smaller than the sum of its proper divisors (107536962).

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

72002238 is a wasteful number, since it uses less digits than its factorization.

72002238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155872.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 72002238 is about 8485.4132486285. The cubic root of 72002238 is about 416.0210749616.

The spelling of 72002238 in words is "seventy-two million, two thousand, two hundred thirty-eight".