145288490 has 8 divisors (see below), whose sum is σ = 261519300. Its totient is φ = 58115392.

The previous prime is 145288489. The next prime is 145288523. The reversal of 145288490 is 94882541.

It can be written as a sum of positive squares in 2 ways, for example, as 126270169 + 19018321 = 11237^2 + 4361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145288490² = 42217490652960200, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7264415 + ... + 7264434.

Almost surely, 2^145288490 is an apocalyptic number.

145288490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145288490 is a deficient number, since it is larger than the sum of its proper divisors (116230810).

145288490 is a wasteful number, since it uses less digits than its factorization.

145288490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14528856.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 145288490 is about 12053.5675216925. The cubic root of 145288490 is about 525.7069719690.

The spelling of 145288490 in words is "one hundred forty-five million, two hundred eighty-eight thousand, four hundred ninety".