72124148 has 6 divisors (see below), whose sum is σ = 126217266. Its totient is φ = 36062072.

The previous prime is 72124147. The next prime is 72124153. The reversal of 72124148 is 84142127.

It can be written as a sum of positive squares in only one way, i.e., 56220004 + 15904144 = 7498^2 + 3988^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72124148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72124147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015515 + ... + 9015522.

It is an arithmetic number, because the mean of its divisors is an integer number (21036211).

Almost surely, 2^72124148 is an apocalyptic number.

It is an amenable number.

72124148 is a deficient number, since it is larger than the sum of its proper divisors (54093118).

72124148 is a wasteful number, since it uses less digits than its factorization.

72124148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18031041 (or 18031039 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 72124148 is about 8492.5937145256. The cubic root of 72124148 is about 416.2557367990.

The spelling of 72124148 in words is "seventy-two million, one hundred twenty-four thousand, one hundred forty-eight".