72075534 has 16 divisors (see below), whose sum is σ = 147218688. Its totient is φ = 23513912.

The previous prime is 72075533. The next prime is 72075539. The reversal of 72075534 is 43557027.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72075495 and 72075504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72075533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127512 + ... + 128075.

It is an arithmetic number, because the mean of its divisors is an integer number (9201168).

Almost surely, 2^72075534 is an apocalyptic number.

72075534 is an abundant number, since it is smaller than the sum of its proper divisors (75143154).

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

72075534 is a wasteful number, since it uses less digits than its factorization.

72075534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255639.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 72075534 is about 8489.7310911477. The cubic root of 72075534 is about 416.1621925183.

The spelling of 72075534 in words is "seventy-two million, seventy-five thousand, five hundred thirty-four".