145673280 has 84 divisors (see below), whose sum is σ = 501065292. Its totient is φ = 38845440.

The previous prime is 145673279. The next prime is 145673321. The reversal of 145673280 is 82376541.

145673280 is a `hidden beast` number, since 14 + 567 + 3 + 2 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76317696 + 69355584 = 8736^2 + 8328^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22411 + ... + 28170.

It is an arithmetic number, because the mean of its divisors is an integer number (5965063).

Almost surely, 2^145673280 is an apocalyptic number.

145673280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145673280 is an abundant number, since it is smaller than the sum of its proper divisors (355392012).

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

145673280 is a wasteful number, since it uses less digits than its factorization.

145673280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50604 (or 50591 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 145673280 is about 12069.5186316605. The cubic root of 145673280 is about 526.1706665709.

The spelling of 145673280 in words is "one hundred forty-five million, six hundred seventy-three thousand, two hundred eighty".