415430721 has 16 divisors (see below), whose sum is σ = 635307520. Its totient is φ = 268019280.

The previous prime is 415430689. The next prime is 415430731. The reversal of 415430721 is 127034514.

It is not a de Polignac number, because 415430721 - 2⁵ = 415430689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415430731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247330 + ... + 249003.

It is an arithmetic number, because the mean of its divisors is an integer number (39706720).

Almost surely, 2^415430721 is an apocalyptic number.

It is an amenable number.

415430721 is a deficient number, since it is larger than the sum of its proper divisors (219876799).

415430721 is a wasteful number, since it uses less digits than its factorization.

415430721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496373 (or 496367 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 415430721 is about 20382.1176770227. The cubic root of 415430721 is about 746.1615566505.

The spelling of 415430721 in words is "four hundred fifteen million, four hundred thirty thousand, seven hundred twenty-one".