429228261 has 72 divisors (see below), whose sum is σ = 804681920. Its totient is φ = 221348160.

The previous prime is 429228229. The next prime is 429228281. The reversal of 429228261 is 162822924.

429228261 is a `hidden beast` number, since 429 + 228 + 2 + 6 + 1 = 666.

It is not a de Polignac number, because 429228261 - 2⁵ = 429228229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (429228281) 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 71 ways as a sum of consecutive naturals, for example, 3132985 + ... + 3133121.

Almost surely, 2^429228261 is an apocalyptic number.

It is an amenable number.

429228261 is a deficient number, since it is larger than the sum of its proper divisors (375453659).

429228261 is a wasteful number, since it uses less digits than its factorization.

429228261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 158 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 429228261 is about 20717.8247168954. The cubic root of 429228261 is about 754.3324134034.

The spelling of 429228261 in words is "four hundred twenty-nine million, two hundred twenty-eight thousand, two hundred sixty-one".