146721472 has 14 divisors (see below), whose sum is σ = 291150548. Its totient is φ = 73360704.

The previous prime is 146721433. The next prime is 146721479. The reversal of 146721472 is 274127641.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (146721479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1146198 + ... + 1146325.

Almost surely, 2^146721472 is an apocalyptic number.

It is an amenable number.

146721472 is a deficient number, since it is larger than the sum of its proper divisors (144429076).

146721472 is an equidigital number, since it uses as much as digits as its factorization.

146721472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292535 (or 2292525 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 146721472 is about 12112.8639057821. The cubic root of 146721472 is about 527.4296718980.

The spelling of 146721472 in words is "one hundred forty-six million, seven hundred twenty-one thousand, four hundred seventy-two".