415721652 has 12 divisors (see below), whose sum is σ = 970017216. Its totient is φ = 138573880.

The previous prime is 415721651. The next prime is 415721659. The reversal of 415721652 is 256127514.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415721651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17321724 + ... + 17321747.

It is an arithmetic number, because the mean of its divisors is an integer number (80834768).

Almost surely, 2^415721652 is an apocalyptic number.

It is an amenable number.

415721652 is an abundant number, since it is smaller than the sum of its proper divisors (554295564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

415721652 is a wasteful number, since it uses less digits than its factorization.

415721652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34643478 (or 34643476 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 415721652 is about 20389.2533458192. The cubic root of 415721652 is about 746.3356978985.

The spelling of 415721652 in words is "four hundred fifteen million, seven hundred twenty-one thousand, six hundred fifty-two".