145988590 has 64 divisors (see below), whose sum is σ = 314979840. Its totient is φ = 48090240.

The previous prime is 145988587. The next prime is 145988599. The reversal of 145988590 is 95889541.

145988590 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145988599) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 46552 + ... + 49588.

It is an arithmetic number, because the mean of its divisors is an integer number (4921560).

Almost surely, 2^145988590 is an apocalyptic number.

145988590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145988590 is an abundant number, since it is smaller than the sum of its proper divisors (168991250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145988590 is a wasteful number, since it uses less digits than its factorization.

145988590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 145988590 is about 12082.5738152101. The cubic root of 145988590 is about 526.5500253541.

The spelling of 145988590 in words is "one hundred forty-five million, nine hundred eighty-eight thousand, five hundred ninety".