1670867328 has 128 divisors (see below), whose sum is σ = 4796880480. Its totient is φ = 512262144.

The previous prime is 1670867327. The next prime is 1670867333. The reversal of 1670867328 is 8237680761.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670867327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2161150 + ... + 2161922.

Almost surely, 2^1670867328 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 1670867328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398440240).

1670867328 is an abundant number, since it is smaller than the sum of its proper divisors (3126013152).

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

1670867328 is a wasteful number, since it uses less digits than its factorization.

1670867328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 1670867328 is about 40876.2440544627. The cubic root of 1670867328 is about 1186.6263527664.

The spelling of 1670867328 in words is "one billion, six hundred seventy million, eight hundred sixty-seven thousand, three hundred twenty-eight".