145716590 has 32 divisors (see below), whose sum is σ = 272160000. Its totient is φ = 56105728.

The previous prime is 145716589. The next prime is 145716611. The reversal of 145716590 is 95617541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138386 + ... + 139434.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^145716590 is an apocalyptic number.

145716590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145716590 is a deficient number, since it is larger than the sum of its proper divisors (126443410).

145716590 is a wasteful number, since it uses less digits than its factorization.

145716590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 145716590 is about 12071.3126875249. The cubic root of 145716590 is about 526.2228065230. Note that the first 3 decimals are identical.

The spelling of 145716590 in words is "one hundred forty-five million, seven hundred sixteen thousand, five hundred ninety".