145447936 has 22 divisors (see below), whose sum is σ = 290755880. Its totient is φ = 72723456.

The previous prime is 145447919. The next prime is 145447949. The reversal of 145447936 is 639744541.

It is a junction number, because it is equal to n+sod(n) for n = 145447892 and 145447901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69996 + ... + 72043.

Almost surely, 2^145447936 is an apocalyptic number.

145447936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145447936 is a deficient number, since it is larger than the sum of its proper divisors (145307944).

145447936 is an equidigital number, since it uses as much as digits as its factorization.

145447936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142059 (or 142041 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 145447936 is about 12060.1797664877. The cubic root of 145447936 is about 525.8992130045.

The spelling of 145447936 in words is "one hundred forty-five million, four hundred forty-seven thousand, nine hundred thirty-six".