229287021 has 8 divisors (see below), whose sum is σ = 316258080. Its totient is φ = 147586992.

The previous prime is 229287013. The next prime is 229287029. The reversal of 229287021 is 120782922.

It is an interprime number because it is at equal distance from previous prime (229287013) and next prime (229287029).

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

It is not a de Polignac number, because 229287021 - 2³ = 229287013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229287029) 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, 1317655 + ... + 1317828.

It is an arithmetic number, because the mean of its divisors is an integer number (39532260).

Almost surely, 2^229287021 is an apocalyptic number.

It is an amenable number.

229287021 is a deficient number, since it is larger than the sum of its proper divisors (86971059).

229287021 is a wasteful number, since it uses less digits than its factorization.

229287021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635515.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 229287021 is about 15142.2264215009. The cubic root of 229287021 is about 612.0588152070.

The spelling of 229287021 in words is "two hundred twenty-nine million, two hundred eighty-seven thousand, twenty-one".