72002047 has 8 divisors (see below), whose sum is σ = 78294944. Its totient is φ = 65816928.

The previous prime is 72002011. The next prime is 72002053. The reversal of 72002047 is 74020027.

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

It is a cyclic number.

It is not a de Polignac number, because 72002047 - 2¹¹ = 71999999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72002087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25548 + ... + 28225.

It is an arithmetic number, because the mean of its divisors is an integer number (9786868).

Almost surely, 2^72002047 is an apocalyptic number.

72002047 is a deficient number, since it is larger than the sum of its proper divisors (6292897).

72002047 is a wasteful number, since it uses less digits than its factorization.

72002047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53889.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 72002047 is about 8485.4019940130. The cubic root of 72002047 is about 416.0207071023.

The spelling of 72002047 in words is "seventy-two million, two thousand, forty-seven".