229138472 has 8 divisors (see below), whose sum is σ = 429634650. Its totient is φ = 114569232.

The previous prime is 229138471. The next prime is 229138493. The reversal of 229138472 is 274831922.

It can be written as a sum of positive squares in only one way, i.e., 147525316 + 81613156 = 12146^2 + 9034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (229138471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14321147 + ... + 14321162.

Almost surely, 2^229138472 is an apocalyptic number.

It is an amenable number.

229138472 is a deficient number, since it is larger than the sum of its proper divisors (200496178).

229138472 is a wasteful number, since it uses less digits than its factorization.

229138472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28642315 (or 28642311 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 229138472 is about 15137.3205026517. The cubic root of 229138472 is about 611.9266077425.

The spelling of 229138472 in words is "two hundred twenty-nine million, one hundred thirty-eight thousand, four hundred seventy-two".