145700890 has 8 divisors (see below), whose sum is σ = 262261620. Its totient is φ = 58280352.

The previous prime is 145700881. The next prime is 145700909. The reversal of 145700890 is 98007541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123676641 + 22024249 = 11121^2 + 4693^2 .

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

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, 7285035 + ... + 7285054.

Almost surely, 2^145700890 is an apocalyptic number.

145700890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145700890 is a deficient number, since it is larger than the sum of its proper divisors (116560730).

145700890 is a wasteful number, since it uses less digits than its factorization.

145700890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14570096.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 145700890 is about 12070.6623679067. The cubic root of 145700890 is about 526.2039068338.

The spelling of 145700890 in words is "one hundred forty-five million, seven hundred thousand, eight hundred ninety".