146326138 has 64 divisors (see below), whose sum is σ = 274710528. Its totient is φ = 57087360.

The previous prime is 146326111. The next prime is 146326151. The reversal of 146326138 is 831623641.

It is a happy number.

It is a super-2 number, since 2×146326138² = 42822677323990088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1068006 + ... + 1068142.

It is an arithmetic number, because the mean of its divisors is an integer number (4292352).

Almost surely, 2^146326138 is an apocalyptic number.

146326138 is a deficient number, since it is larger than the sum of its proper divisors (128384390).

146326138 is a wasteful number, since it uses less digits than its factorization.

146326138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307.

The product of its digits is 20736, while the sum is 34.

The square root of 146326138 is about 12096.5341317255. The cubic root of 146326138 is about 526.9555344408.

Adding to 146326138 its reverse (831623641), we get a palindrome (977949779).

The spelling of 146326138 in words is "one hundred forty-six million, three hundred twenty-six thousand, one hundred thirty-eight".