72283013 has 4 divisors (see below), whose sum is σ = 78854208. Its totient is φ = 65711820.

The previous prime is 72282989. The next prime is 72283021. The reversal of 72283013 is 31038227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72283013 - 2⁶ = 72282949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72283063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285581 + ... + 3285602.

It is an arithmetic number, because the mean of its divisors is an integer number (19713552).

Almost surely, 2^72283013 is an apocalyptic number.

It is an amenable number.

72283013 is a deficient number, since it is larger than the sum of its proper divisors (6571195).

72283013 is a wasteful number, since it uses less digits than its factorization.

72283013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571194.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72283013 is about 8501.9417193956. The cubic root of 72283013 is about 416.5611360119.

The spelling of 72283013 in words is "seventy-two million, two hundred eighty-three thousand, thirteen".