845723730 has 32 divisors (see below), whose sum is σ = 2049450624. Its totient is φ = 223335936.

The previous prime is 845723653. The next prime is 845723737. The reversal of 845723730 is 37327548.

It is a super-2 number, since 2×845723730² = 1430497254970225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (845723737) 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, 133759 + ... + 139938.

It is an arithmetic number, because the mean of its divisors is an integer number (64045332).

Almost surely, 2^845723730 is an apocalyptic number.

845723730 is an abundant number, since it is smaller than the sum of its proper divisors (1203726894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845723730 is a wasteful number, since it uses less digits than its factorization.

845723730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273810.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 845723730 is about 29081.3295775829. The cubic root of 845723730 is about 945.6770266695.

The spelling of 845723730 in words is "eight hundred forty-five million, seven hundred twenty-three thousand, seven hundred thirty".