403671616 has 28 divisors (see below), whose sum is σ = 819670192. Its totient is φ = 197140608.

The previous prime is 403671607. The next prime is 403671617. The reversal of 403671616 is 616176304.

It is not an unprimeable number, because it can be changed into a prime (403671617) 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, 70590 + ... + 76093.

Almost surely, 2^403671616 is an apocalyptic number.

It is an amenable number.

403671616 is an abundant number, since it is smaller than the sum of its proper divisors (415998576).

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

403671616 is a wasteful number, since it uses less digits than its factorization.

403671616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146738 (or 146728 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 403671616 is about 20091.5807242735. The cubic root of 403671616 is about 739.0538284715.

The spelling of 403671616 in words is "four hundred three million, six hundred seventy-one thousand, six hundred sixteen".