229725747 has 16 divisors (see below), whose sum is σ = 348636960. Its totient is φ = 149414400.

The previous prime is 229725721. The next prime is 229725757. The reversal of 229725747 is 747527922.

229725747 is a `hidden beast` number, since 2 + 2 + 9 + 72 + 574 + 7 = 666.

It is not a de Polignac number, because 229725747 - 2⁷ = 229725619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (229725757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102654 + ... + 104867.

It is an arithmetic number, because the mean of its divisors is an integer number (21789810).

Almost surely, 2^229725747 is an apocalyptic number.

229725747 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

229725747 is a deficient number, since it is larger than the sum of its proper divisors (118911213).

229725747 is a wasteful number, since it uses less digits than its factorization.

229725747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207571 (or 207565 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 229725747 is about 15156.7063374600. The cubic root of 229725747 is about 612.4489449045.

The spelling of 229725747 in words is "two hundred twenty-nine million, seven hundred twenty-five thousand, seven hundred forty-seven".