72345433 has 4 divisors (see below), whose sum is σ = 72374500. Its totient is φ = 72316368.

The previous prime is 72345367. The next prime is 72345439. The reversal of 72345433 is 33454327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25928464 + 46416969 = 5092^2 + 6813^2 .

It is a cyclic number.

It is not a de Polignac number, because 72345433 - 2¹³ = 72337241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72345395 and 72345404.

It is not an unprimeable number, because it can be changed into a prime (72345439) 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, 10410 + ... + 15907.

It is an arithmetic number, because the mean of its divisors is an integer number (18093625).

Almost surely, 2^72345433 is an apocalyptic number.

It is an amenable number.

72345433 is a deficient number, since it is larger than the sum of its proper divisors (29067).

72345433 is a wasteful number, since it uses less digits than its factorization.

72345433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29066.

The product of its digits is 30240, while the sum is 31.

The square root of 72345433 is about 8505.6118533589. The cubic root of 72345433 is about 416.6810086441.

The spelling of 72345433 in words is "seventy-two million, three hundred forty-five thousand, four hundred thirty-three".