145047472 has 10 divisors (see below), whose sum is σ = 281029508. Its totient is φ = 72523728.

The previous prime is 145047457. The next prime is 145047493. The reversal of 145047472 is 274740541.

It is a happy number.

145047472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4532718 + ... + 4532749.

Almost surely, 2^145047472 is an apocalyptic number.

It is an amenable number.

145047472 is a deficient number, since it is larger than the sum of its proper divisors (135982036).

145047472 is an equidigital number, since it uses as much as digits as its factorization.

145047472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9065475 (or 9065469 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 145047472 is about 12043.5655849918. The cubic root of 145047472 is about 525.4161139416.

The spelling of 145047472 in words is "one hundred forty-five million, forty-seven thousand, four hundred seventy-two".