145868540 has 24 divisors (see below), whose sum is σ = 306724320. Its totient is φ = 58271168.

The previous prime is 145868539. The next prime is 145868573. The reversal of 145868540 is 45868541.

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, 12434 + ... + 21126.

It is an arithmetic number, because the mean of its divisors is an integer number (12780180).

Almost surely, 2^145868540 is an apocalyptic number.

145868540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145868540 is an abundant number, since it is smaller than the sum of its proper divisors (160855780).

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

145868540 is a wasteful number, since it uses less digits than its factorization.

145868540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9541 (or 9539 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 145868540 is about 12077.6048950113. The cubic root of 145868540 is about 526.4056541045.

Subtracting from 145868540 its reverse (45868541), we obtain a palindrome (99999999).

The spelling of 145868540 in words is "one hundred forty-five million, eight hundred sixty-eight thousand, five hundred forty".