234545140 has 48 divisors (see below), whose sum is σ = 503994960. Its totient is φ = 91653120.

The previous prime is 234545137. The next prime is 234545147. The reversal of 234545140 is 41545432.

It can be written as a sum of positive squares in 8 ways, for example, as 12773476 + 221771664 = 3574^2 + 14892^2 .

It is a super-2 number, since 2×234545140² = 110022845395239200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 234545099 and 234545108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234545147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433270 + ... + 433810.

It is an arithmetic number, because the mean of its divisors is an integer number (10499895).

Almost surely, 2^234545140 is an apocalyptic number.

234545140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234545140 is an abundant number, since it is smaller than the sum of its proper divisors (269449820).

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

234545140 is a wasteful number, since it uses less digits than its factorization.

234545140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 234545140 is about 15314.8666334382. The cubic root of 234545140 is about 616.7021740775.

The spelling of 234545140 in words is "two hundred thirty-four million, five hundred forty-five thousand, one hundred forty".