421653016 has 32 divisors (see below), whose sum is σ = 837558000. Its totient is φ = 198446976.

The previous prime is 421653013. The next prime is 421653017. The reversal of 421653016 is 610356124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421653013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15030 + ... + 32698.

Almost surely, 2^421653016 is an apocalyptic number.

It is an amenable number.

421653016 is a deficient number, since it is larger than the sum of its proper divisors (415904984).

421653016 is a wasteful number, since it uses less digits than its factorization.

421653016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17851 (or 17847 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 421653016 is about 20534.1913889980. The cubic root of 421653016 is about 749.8684308467.

The spelling of 421653016 in words is "four hundred twenty-one million, six hundred fifty-three thousand, sixteen".