72099470 has 8 divisors (see below), whose sum is σ = 129779064. Its totient is φ = 28839784.

The previous prime is 72099463. The next prime is 72099473. The reversal of 72099470 is 7499027.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72099473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3604964 + ... + 3604983.

It is an arithmetic number, because the mean of its divisors is an integer number (16222383).

Almost surely, 2^72099470 is an apocalyptic number.

72099470 is a deficient number, since it is larger than the sum of its proper divisors (57679594).

72099470 is a wasteful number, since it uses less digits than its factorization.

72099470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209954.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 72099470 is about 8491.1406772000. The cubic root of 72099470 is about 416.2082560260.

The spelling of 72099470 in words is "seventy-two million, ninety-nine thousand, four hundred seventy".