152533638 has 16 divisors (see below), whose sum is σ = 338963760. Its totient is φ = 50844528.

The previous prime is 152533621. The next prime is 152533643. The reversal of 152533638 is 836335251.

152533638 is a `hidden beast` number, since 15 + 2 + 5 + 3 + 3 + 638 = 666.

152533638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412295 + ... + 1412402.

It is an arithmetic number, because the mean of its divisors is an integer number (21185235).

Almost surely, 2^152533638 is an apocalyptic number.

152533638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

152533638 is an abundant number, since it is smaller than the sum of its proper divisors (186430122).

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

152533638 is a wasteful number, since it uses less digits than its factorization.

152533638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824708 (or 2824702 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 152533638 is about 12350.4509229420. The cubic root of 152533638 is about 534.3041443757.

Adding to 152533638 its reverse (836335251), we get a palindrome (988868889).

The spelling of 152533638 in words is "one hundred fifty-two million, five hundred thirty-three thousand, six hundred thirty-eight".