145897388 has 48 divisors (see below), whose sum is σ = 316296960. Its totient is φ = 57340224.

The previous prime is 145897361. The next prime is 145897397. The reversal of 145897388 is 883798541.

145897388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 58103 + ... + 60561.

It is an arithmetic number, because the mean of its divisors is an integer number (6589520).

Almost surely, 2^145897388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145897388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158148480).

145897388 is an abundant number, since it is smaller than the sum of its proper divisors (170399572).

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

145897388 is a wasteful number, since it uses less digits than its factorization.

145897388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646 (or 2644 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 53.

The square root of 145897388 is about 12078.7991124946. The cubic root of 145897388 is about 526.4403537259.

The spelling of 145897388 in words is "one hundred forty-five million, eight hundred ninety-seven thousand, three hundred eighty-eight".