145328690 has 16 divisors (see below), whose sum is σ = 281714328. Its totient is φ = 53659776.

The previous prime is 145328683. The next prime is 145328731. The reversal of 145328690 is 96823541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 98227921 + 47100769 = 9911^2 + 6863^2 .

It is a super-2 number, since 2×145328690² = 42240856274232200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 558827 + ... + 559086.

Almost surely, 2^145328690 is an apocalyptic number.

145328690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145328690 is a deficient number, since it is larger than the sum of its proper divisors (136385638).

145328690 is a wasteful number, since it uses less digits than its factorization.

145328690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117933.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 145328690 is about 12055.2349624551. The cubic root of 145328690 is about 525.7554536059.

The spelling of 145328690 in words is "one hundred forty-five million, three hundred twenty-eight thousand, six hundred ninety".