72403671 has 16 divisors (see below), whose sum is σ = 98651520. Its totient is φ = 47218080.

The previous prime is 72403651. The next prime is 72403673. The reversal of 72403671 is 17630427.

It is a de Polignac number, because none of the positive numbers 2^k-72403671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72403673) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 104436 + ... + 105126.

It is an arithmetic number, because the mean of its divisors is an integer number (6165720).

Almost surely, 2^72403671 is an apocalyptic number.

72403671 is a deficient number, since it is larger than the sum of its proper divisors (26247849).

72403671 is a wasteful number, since it uses less digits than its factorization.

72403671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 72403671 is about 8509.0346691032. The cubic root of 72403671 is about 416.7927879182.

The spelling of 72403671 in words is "seventy-two million, four hundred three thousand, six hundred seventy-one".