72020723 has 8 divisors (see below), whose sum is σ = 73908240. Its totient is φ = 70139520.

The previous prime is 72020713. The next prime is 72020771. The reversal of 72020723 is 32702027.

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

It is not a de Polignac number, because 72020723 - 2⁸ = 72020467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72020713) 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, 29111 + ... + 31487.

It is an arithmetic number, because the mean of its divisors is an integer number (9238530).

Almost surely, 2^72020723 is an apocalyptic number.

72020723 is a deficient number, since it is larger than the sum of its proper divisors (1887517).

72020723 is a wasteful number, since it uses less digits than its factorization.

72020723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 72020723 is about 8486.5024008716. The cubic root of 72020723 is about 416.0566733531.

The spelling of 72020723 in words is "seventy-two million, twenty thousand, seven hundred twenty-three".