152321638 has 16 divisors (see below), whose sum is σ = 264430080. Its totient is φ = 64453896.

The previous prime is 152321623. The next prime is 152321639. The reversal of 152321638 is 836123251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152321639) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 67756 + ... + 69967.

It is an arithmetic number, because the mean of its divisors is an integer number (16526880).

Almost surely, 2^152321638 is an apocalyptic number.

152321638 is a deficient number, since it is larger than the sum of its proper divisors (112108442).

152321638 is a wasteful number, since it uses less digits than its factorization.

152321638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137811.

The product of its digits is 8640, while the sum is 31.

The square root of 152321638 is about 12341.8652561110. The cubic root of 152321638 is about 534.0564940908.

Adding to 152321638 its reverse (836123251), we get a palindrome (988444889).

The spelling of 152321638 in words is "one hundred fifty-two million, three hundred twenty-one thousand, six hundred thirty-eight".