145631680 has 28 divisors (see below), whose sum is σ = 346786200. Its totient is φ = 58252544.

The previous prime is 145631663. The next prime is 145631683. The reversal of 145631680 is 86136541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145631683) 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 3 ways as a sum of consecutive naturals, for example, 227230 + ... + 227869.

Almost surely, 2^145631680 is an apocalyptic number.

145631680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145631680 is an abundant number, since it is smaller than the sum of its proper divisors (201154520).

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

145631680 is an equidigital number, since it uses as much as digits as its factorization.

145631680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455116 (or 455106 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 145631680 is about 12067.7951590172. The cubic root of 145631680 is about 526.1205755186.

The spelling of 145631680 in words is "one hundred forty-five million, six hundred thirty-one thousand, six hundred eighty".