154238386 has 8 divisors (see below), whose sum is σ = 231587244. Its totient is φ = 77042640.

The previous prime is 154238353. The next prime is 154238389. The reversal of 154238386 is 683832451.

It can be written as a sum of positive squares in 2 ways, for example, as 151757761 + 2480625 = 12319^2 + 1575^2 .

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

It is not an unprimeable number, because it can be changed into a prime (154238389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35725 + ... + 39808.

Almost surely, 2^154238386 is an apocalyptic number.

154238386 is a deficient number, since it is larger than the sum of its proper divisors (77348858).

154238386 is a wasteful number, since it uses less digits than its factorization.

154238386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76556.

The product of its digits is 138240, while the sum is 40.

The square root of 154238386 is about 12419.2747775383. The cubic root of 154238386 is about 536.2872731430.

The spelling of 154238386 in words is "one hundred fifty-four million, two hundred thirty-eight thousand, three hundred eighty-six".