145238860 has 24 divisors (see below), whose sum is σ = 328463856. Its totient is φ = 53626560.

The previous prime is 145238809. The next prime is 145238867. The reversal of 145238860 is 68832541.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (145238867) 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, 279046 + ... + 279565.

It is an arithmetic number, because the mean of its divisors is an integer number (13685994).

Almost surely, 2^145238860 is an apocalyptic number.

145238860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145238860 is an abundant number, since it is smaller than the sum of its proper divisors (183224996).

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

145238860 is a wasteful number, since it uses less digits than its factorization.

145238860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558633 (or 558631 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 145238860 is about 12051.5086192559. The cubic root of 145238860 is about 525.6471053124.

The spelling of 145238860 in words is "one hundred forty-five million, two hundred thirty-eight thousand, eight hundred sixty".