229723494 has 128 divisors (see below), whose sum is σ = 644087808. Its totient is φ = 52652160.

The previous prime is 229723477. The next prime is 229723513. The reversal of 229723494 is 494327922.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 137307 + ... + 138969.

It is an arithmetic number, because the mean of its divisors is an integer number (5031936).

Almost surely, 2^229723494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229723494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322043904).

229723494 is an abundant number, since it is smaller than the sum of its proper divisors (414364314).

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

229723494 is a wasteful number, since it uses less digits than its factorization.

229723494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722.

The product of its digits is 217728, while the sum is 42.

The square root of 229723494 is about 15156.6320137424. The cubic root of 229723494 is about 612.4469427316.

The spelling of 229723494 in words is "two hundred twenty-nine million, seven hundred twenty-three thousand, four hundred ninety-four".