258223944 has 144 divisors (see below), whose sum is σ = 753716880. Its totient is φ = 73106880.

The previous prime is 258223939. The next prime is 258223957. The reversal of 258223944 is 449322852.

258223944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6005187 + ... + 6005229.

It is an arithmetic number, because the mean of its divisors is an integer number (5234145).

Almost surely, 2^258223944 is an apocalyptic number.

258223944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258223944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376858440).

258223944 is an abundant number, since it is smaller than the sum of its proper divisors (495492936).

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

258223944 is a wasteful number, since it uses less digits than its factorization.

258223944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 82 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 258223944 is about 16069.3479643699. The cubic root of 258223944 is about 636.7938151740.

The spelling of 258223944 in words is "two hundred fifty-eight million, two hundred twenty-three thousand, nine hundred forty-four".