72380434 has 8 divisors (see below), whose sum is σ = 124080768. Its totient is φ = 31020180.

The previous prime is 72380419. The next prime is 72380437. The reversal of 72380434 is 43408327.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72380396 and 72380405.

It is not an unprimeable number, because it can be changed into a prime (72380437) 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, 2585002 + ... + 2585029.

It is an arithmetic number, because the mean of its divisors is an integer number (15510096).

Almost surely, 2^72380434 is an apocalyptic number.

72380434 is a deficient number, since it is larger than the sum of its proper divisors (51700334).

72380434 is a wasteful number, since it uses less digits than its factorization.

72380434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170040.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 72380434 is about 8507.6691284981. The cubic root of 72380434 is about 416.7481951042.

The spelling of 72380434 in words is "seventy-two million, three hundred eighty thousand, four hundred thirty-four".