72343745 has 8 divisors (see below), whose sum is σ = 87298560. Its totient is φ = 57550960.

The previous prime is 72343741. The next prime is 72343753. The reversal of 72343745 is 54734327.

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

It is not a de Polignac number, because 72343745 - 2² = 72343741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72343741) 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, 39521 + ... + 41310.

It is an arithmetic number, because the mean of its divisors is an integer number (10912320).

Almost surely, 2^72343745 is an apocalyptic number.

It is an amenable number.

72343745 is a deficient number, since it is larger than the sum of its proper divisors (14954815).

72343745 is a wasteful number, since it uses less digits than its factorization.

72343745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81015.

The product of its digits is 70560, while the sum is 35.

The square root of 72343745 is about 8505.5126241750. The cubic root of 72343745 is about 416.6777678820.

The spelling of 72343745 in words is "seventy-two million, three hundred forty-three thousand, seven hundred forty-five".