152243540 has 24 divisors (see below), whose sum is σ = 320064360. Its totient is φ = 60830208.

The previous prime is 152243527. The next prime is 152243543. The reversal of 152243540 is 45342251.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 89453764 + 62789776 = 9458^2 + 7924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152243543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16976 + ... + 24344.

It is an arithmetic number, because the mean of its divisors is an integer number (13336015).

Almost surely, 2^152243540 is an apocalyptic number.

152243540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152243540 is an abundant number, since it is smaller than the sum of its proper divisors (167820820).

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

152243540 is a wasteful number, since it uses less digits than its factorization.

152243540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8411 (or 8409 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 152243540 is about 12338.7009040660. The cubic root of 152243540 is about 533.9652050813.

Adding to 152243540 its reverse (45342251), we get a palindrome (197585791).

The spelling of 152243540 in words is "one hundred fifty-two million, two hundred forty-three thousand, five hundred forty".