258740236 has 6 divisors (see below), whose sum is σ = 452795420. Its totient is φ = 129370116.

The previous prime is 258740219. The next prime is 258740267. The reversal of 258740236 is 632047852.

It is a junction number, because it is equal to n+sod(n) for n = 258740195 and 258740204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32342526 + ... + 32342533.

Almost surely, 2^258740236 is an apocalyptic number.

It is an amenable number.

258740236 is a deficient number, since it is larger than the sum of its proper divisors (194055184).

258740236 is a wasteful number, since it uses less digits than its factorization.

258740236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64685063 (or 64685061 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 258740236 is about 16085.4044400506. The cubic root of 258740236 is about 637.2179337065.

The spelling of 258740236 in words is "two hundred fifty-eight million, seven hundred forty thousand, two hundred thirty-six".