145447756 has 12 divisors (see below), whose sum is σ = 254774520. Its totient is φ = 72655040.

The previous prime is 145447727. The next prime is 145447759. The reversal of 145447756 is 657744541.

145447756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145447759) 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, 12301 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (21231210).

Almost surely, 2^145447756 is an apocalyptic number.

It is an amenable number.

145447756 is a deficient number, since it is larger than the sum of its proper divisors (109326764).

145447756 is a wasteful number, since it uses less digits than its factorization.

145447756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34424 (or 34422 counting only the distinct ones).

The product of its digits is 470400, while the sum is 43.

The square root of 145447756 is about 12060.1723039101. The cubic root of 145447756 is about 525.8989960611.

The spelling of 145447756 in words is "one hundred forty-five million, four hundred forty-seven thousand, seven hundred fifty-six".