72288742 has 8 divisors (see below), whose sum is σ = 109060416. Its totient is φ = 35935272.

The previous prime is 72288631. The next prime is 72288763. The reversal of 72288742 is 24788227.

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 = 72288695 and 72288704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104118 + ... + 104809.

It is an arithmetic number, because the mean of its divisors is an integer number (13632552).

Almost surely, 2^72288742 is an apocalyptic number.

72288742 is a deficient number, since it is larger than the sum of its proper divisors (36771674).

72288742 is a wasteful number, since it uses less digits than its factorization.

72288742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209102.

The product of its digits is 100352, while the sum is 40.

The square root of 72288742 is about 8502.2786357541. The cubic root of 72288742 is about 416.5721409751.

The spelling of 72288742 in words is "seventy-two million, two hundred eighty-eight thousand, seven hundred forty-two".