145989304 has 8 divisors (see below), whose sum is σ = 273729960. Its totient is φ = 72994648.

The previous prime is 145989271. The next prime is 145989307. The reversal of 145989304 is 403989541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145989307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124324 + ... + 9124339.

It is an arithmetic number, because the mean of its divisors is an integer number (34216245).

Almost surely, 2^145989304 is an apocalyptic number.

It is an amenable number.

145989304 is a deficient number, since it is larger than the sum of its proper divisors (127740656).

145989304 is a wasteful number, since it uses less digits than its factorization.

145989304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18248669 (or 18248665 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 145989304 is about 12082.6033618587. The cubic root of 145989304 is about 526.5508837684.

The spelling of 145989304 in words is "one hundred forty-five million, nine hundred eighty-nine thousand, three hundred four".