72471078 has 32 divisors (see below), whose sum is σ = 161481600. Its totient is φ = 24091848.

The previous prime is 72471071. The next prime is 72471079. The reversal of 72471078 is 87017427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72471071) 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 15 ways as a sum of consecutive naturals, for example, 21025 + ... + 24227.

It is an arithmetic number, because the mean of its divisors is an integer number (5046300).

Almost surely, 2^72471078 is an apocalyptic number.

72471078 is an abundant number, since it is smaller than the sum of its proper divisors (89010522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72471078 is a wasteful number, since it uses less digits than its factorization.

72471078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 72471078 is about 8512.9946552315. The cubic root of 72471078 is about 416.9220909261.

The spelling of 72471078 in words is "seventy-two million, four hundred seventy-one thousand, seventy-eight".