145891284 has 96 divisors (see below), whose sum is σ = 434875392. Its totient is φ = 36960000.

The previous prime is 145891279. The next prime is 145891307. The reversal of 145891284 is 482198541.

145891284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35959 + ... + 39809.

It is an arithmetic number, because the mean of its divisors is an integer number (4529952).

Almost surely, 2^145891284 is an apocalyptic number.

145891284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145891284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217437696).

145891284 is an abundant number, since it is smaller than the sum of its proper divisors (288984108).

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

145891284 is a wasteful number, since it uses less digits than its factorization.

145891284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917 (or 3915 counting only the distinct ones).

The product of its digits is 92160, while the sum is 42.

The square root of 145891284 is about 12078.5464357264. The cubic root of 145891284 is about 526.4330119524.

The spelling of 145891284 in words is "one hundred forty-five million, eight hundred ninety-one thousand, two hundred eighty-four".