145805886 has 32 divisors (see below), whose sum is σ = 341068800. Its totient is φ = 46043640.

The previous prime is 145805861. The next prime is 145805909. The reversal of 145805886 is 688508541.

145805886 is a `hidden beast` number, since 14 + 58 + 0 + 588 + 6 = 666.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 70030 + ... + 72081.

It is an arithmetic number, because the mean of its divisors is an integer number (10658400).

Almost surely, 2^145805886 is an apocalyptic number.

145805886 is an abundant number, since it is smaller than the sum of its proper divisors (195262914).

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

145805886 is a wasteful number, since it uses less digits than its factorization.

145805886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142141 (or 142135 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The square root of 145805886 is about 12075.0108074486. The cubic root of 145805886 is about 526.3302754038.

The spelling of 145805886 in words is "one hundred forty-five million, eight hundred five thousand, eight hundred eighty-six".