145489456 has 20 divisors (see below), whose sum is σ = 322155472. Its totient is φ = 62352576.

The previous prime is 145489447. The next prime is 145489459. The reversal of 145489456 is 654984541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (145489459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649395 + ... + 649618.

Almost surely, 2^145489456 is an apocalyptic number.

145489456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145489456 is an abundant number, since it is smaller than the sum of its proper divisors (176666016).

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

145489456 is a wasteful number, since it uses less digits than its factorization.

145489456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299028 (or 1299022 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 145489456 is about 12061.9010110347. The cubic root of 145489456 is about 525.9492498276.

The spelling of 145489456 in words is "one hundred forty-five million, four hundred eighty-nine thousand, four hundred fifty-six".