145447456 has 48 divisors (see below), whose sum is σ = 357013440. Its totient is φ = 56666880.

The previous prime is 145447439. The next prime is 145447483. The reversal of 145447456 is 654744541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27051 + ... + 31978.

It is an arithmetic number, because the mean of its divisors is an integer number (7437780).

Almost surely, 2^145447456 is an apocalyptic number.

145447456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145447456 is an abundant number, since it is smaller than the sum of its proper divisors (211565984).

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

145447456 is a wasteful number, since it uses less digits than its factorization.

145447456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59057 (or 59049 counting only the distinct ones).

The product of its digits is 268800, while the sum is 40.

The square root of 145447456 is about 12060.1598662704. The cubic root of 145447456 is about 525.8986344884.

The spelling of 145447456 in words is "one hundred forty-five million, four hundred forty-seven thousand, four hundred fifty-six".