721500148 has 24 divisors (see below), whose sum is σ = 1365005600. Its totient is φ = 332525088.

The previous prime is 721500119. The next prime is 721500173. The reversal of 721500148 is 841005127.

721500148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125478 + ... + 131101.

Almost surely, 2^721500148 is an apocalyptic number.

It is an amenable number.

721500148 is a deficient number, since it is larger than the sum of its proper divisors (643505452).

721500148 is a wasteful number, since it uses less digits than its factorization.

721500148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256639 (or 256637 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 721500148 is about 26860.7547920754. The cubic root of 721500148 is about 896.9029962294.

The spelling of 721500148 in words is "seven hundred twenty-one million, five hundred thousand, one hundred forty-eight".