153235540 has 12 divisors (see below), whose sum is σ = 321794676. Its totient is φ = 61294208.

The previous prime is 153235519. The next prime is 153235543. The reversal of 153235540 is 45532351.

It can be written as a sum of positive squares in 2 ways, for example, as 22316176 + 130919364 = 4724^2 + 11442^2 .

It is a super-2 number, since 2×153235540² = 46962261438183200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 153235499 and 153235508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153235543) 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, 3830869 + ... + 3830908.

It is an arithmetic number, because the mean of its divisors is an integer number (26816223).

Almost surely, 2^153235540 is an apocalyptic number.

153235540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153235540 is an abundant number, since it is smaller than the sum of its proper divisors (168559136).

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

153235540 is a wasteful number, since it uses less digits than its factorization.

153235540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7661786 (or 7661784 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 153235540 is about 12378.8343554634. The cubic root of 153235540 is about 535.1224455522.

Adding to 153235540 its reverse (45532351), we get a palindrome (198767891).

The spelling of 153235540 in words is "one hundred fifty-three million, two hundred thirty-five thousand, five hundred forty".