1672320 has 128 divisors (see below), whose sum is σ = 5826240. Its totient is φ = 405504.

The previous prime is 1672301. The next prime is 1672331. The reversal of 1672320 is 232761.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24927 + ... + 24993.

2^1672320 is an apocalyptic number.

1672320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1672320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2913120).

1672320 is an abundant number, since it is smaller than the sum of its proper divisors (4153920).

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

1672320 is a wasteful number, since it uses less digits than its factorization.

1672320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1672320 is about 1293.1821217447. The cubic root of 1672320 is about 118.6970142193.

The spelling of 1672320 in words is "one million, six hundred seventy-two thousand, three hundred twenty".