145896590 has 32 divisors (see below), whose sum is σ = 313182720. Its totient is φ = 47846304.

The previous prime is 145896577. The next prime is 145896607. The reversal of 145896590 is 95698541.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43700 + ... + 46919.

It is an arithmetic number, because the mean of its divisors is an integer number (9786960).

Almost surely, 2^145896590 is an apocalyptic number.

145896590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145896590 is an abundant number, since it is smaller than the sum of its proper divisors (167286130).

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

145896590 is a wasteful number, since it uses less digits than its factorization.

145896590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90656.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 145896590 is about 12078.7660793642. The cubic root of 145896590 is about 526.4393939185.

The spelling of 145896590 in words is "one hundred forty-five million, eight hundred ninety-six thousand, five hundred ninety".