406448628 has 24 divisors (see below), whose sum is σ = 948706080. Its totient is φ = 135436320.

The previous prime is 406448611. The next prime is 406448633. The reversal of 406448628 is 826844604.

It is a self number, because there is not a number n which added to its sum of digits gives 406448628.

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, 66418 + ... + 72278.

It is an arithmetic number, because the mean of its divisors is an integer number (39529420).

Almost surely, 2^406448628 is an apocalyptic number.

It is an amenable number.

406448628 is an abundant number, since it is smaller than the sum of its proper divisors (542257452).

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

406448628 is a wasteful number, since it uses less digits than its factorization.

406448628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647 (or 11645 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 406448628 is about 20160.5711228626. The cubic root of 406448628 is about 740.7447019826.

The spelling of 406448628 in words is "four hundred six million, four hundred forty-eight thousand, six hundred twenty-eight".