72478148 has 6 divisors (see below), whose sum is σ = 126836766. Its totient is φ = 36239072.

The previous prime is 72478139. The next prime is 72478169. The reversal of 72478148 is 84187427.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72216004 + 262144 = 8498^2 + 512^2 .

It is a super-3 number, since 3×72478148³ (a number of 25 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 9059765 + ... + 9059772.

It is an arithmetic number, because the mean of its divisors is an integer number (21139461).

Almost surely, 2^72478148 is an apocalyptic number.

It is an amenable number.

72478148 is a deficient number, since it is larger than the sum of its proper divisors (54358618).

72478148 is a wasteful number, since it uses less digits than its factorization.

72478148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18119541 (or 18119539 counting only the distinct ones).

The product of its digits is 100352, while the sum is 41.

The square root of 72478148 is about 8513.4098926341. The cubic root of 72478148 is about 416.9356482578.

The spelling of 72478148 in words is "seventy-two million, four hundred seventy-eight thousand, one hundred forty-eight".