731730545 has 32 divisors (see below), whose sum is σ = 1103735808. Its totient is φ = 453293568.

The previous prime is 731730539. The next prime is 731730547. The reversal of 731730545 is 545037137.

It is not a de Polignac number, because 731730545 - 2⁶ = 731730481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (731730547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4277 + ... + 38493.

It is an arithmetic number, because the mean of its divisors is an integer number (34491744).

Almost surely, 2^731730545 is an apocalyptic number.

It is an amenable number.

731730545 is a deficient number, since it is larger than the sum of its proper divisors (372005263).

731730545 is a wasteful number, since it uses less digits than its factorization.

731730545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34289.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 731730545 is about 27050.5183868997. The cubic root of 731730545 is about 901.1222810275.

The spelling of 731730545 in words is "seven hundred thirty-one million, seven hundred thirty thousand, five hundred forty-five".