72243535 has 16 divisors (see below), whose sum is σ = 106698816. Its totient is φ = 45727488.

The previous prime is 72243533. The next prime is 72243551. The reversal of 72243535 is 53534227.

It is a cyclic number.

It is not a de Polignac number, because 72243535 - 2¹ = 72243533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72243497 and 72243506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72243533) 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, 78934 + ... + 79843.

It is an arithmetic number, because the mean of its divisors is an integer number (6668676).

Almost surely, 2^72243535 is an apocalyptic number.

72243535 is a deficient number, since it is larger than the sum of its proper divisors (34455281).

72243535 is a wasteful number, since it uses less digits than its factorization.

72243535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158802.

The product of its digits is 25200, while the sum is 31.

The square root of 72243535 is about 8499.6196973747. The cubic root of 72243535 is about 416.4852860318.

The spelling of 72243535 in words is "seventy-two million, two hundred forty-three thousand, five hundred thirty-five".