145988 has 6 divisors (see below), whose sum is σ = 255486. Its totient is φ = 72992.

The previous prime is 145987. The next prime is 145991. The reversal of 145988 is 889541.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 64 = 382^2 + 8^2 .

It is a super-2 number, since 2×145988² = 42624992288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18245 + ... + 18252.

It is an arithmetic number, because the mean of its divisors is an integer number (42581).

2¹⁴⁵⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

145988 is a deficient number, since it is larger than the sum of its proper divisors (109498).

145988 is a wasteful number, since it uses less digits than its factorization.

145988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36501 (or 36499 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 145988 is about 382.0837604505. The cubic root of 145988 is about 52.6549316018.

The spelling of 145988 in words is "one hundred forty-five thousand, nine hundred eighty-eight".