245952138 has 8 divisors (see below), whose sum is σ = 491904288. Its totient is φ = 81984044.

The previous prime is 245952121. The next prime is 245952149. The reversal of 245952138 is 831259542.

It is a sphenic number, since it is the product of 3 distinct primes.

245952138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 245952096 and 245952105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20496006 + ... + 20496017.

It is an arithmetic number, because the mean of its divisors is an integer number (61488036).

Almost surely, 2^245952138 is an apocalyptic number.

245952138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

245952138 is a wasteful number, since it uses less digits than its factorization.

245952138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40992028.

The product of its digits is 86400, while the sum is 39.

The square root of 245952138 is about 15682.8612823043. The cubic root of 245952138 is about 626.5420167925.

The spelling of 245952138 in words is "two hundred forty-five million, nine hundred fifty-two thousand, one hundred thirty-eight".