145999080 has 48 divisors (see below), whose sum is σ = 474498180. Its totient is φ = 38932992.

The previous prime is 145999037. The next prime is 145999081. The reversal of 145999080 is 80999541.

It can be written as a sum of positive squares in 2 ways, for example, as 144144036 + 1855044 = 12006^2 + 1362^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (145999081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202417 + ... + 203136.

Almost surely, 2^145999080 is an apocalyptic number.

145999080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145999080 is an abundant number, since it is smaller than the sum of its proper divisors (328499100).

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

145999080 is a wasteful number, since it uses less digits than its factorization.

145999080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405570 (or 405563 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 145999080 is about 12083.0079036637. The cubic root of 145999080 is about 526.5626367905.

The spelling of 145999080 in words is "one hundred forty-five million, nine hundred ninety-nine thousand, eighty".