1670025328 has 40 divisors (see below), whose sum is σ = 3447917712. Its totient is φ = 780868608.

The previous prime is 1670025299. The next prime is 1670025341. The reversal of 1670025328 is 8235200761.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1670025293 and 1670025302.

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, 23151 + ... + 62257.

Almost surely, 2^1670025328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670025328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723958856).

1670025328 is an abundant number, since it is smaller than the sum of its proper divisors (1777892384).

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

1670025328 is a wasteful number, since it uses less digits than its factorization.

1670025328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39289 (or 39283 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1670025328 is about 40865.9433758723. The cubic root of 1670025328 is about 1186.4269937766.

The spelling of 1670025328 in words is "one billion, six hundred seventy million, twenty-five thousand, three hundred twenty-eight".