1672556320 has 144 divisors (see below), whose sum is σ = 4355104320. Its totient is φ = 605772288.

The previous prime is 1672556287. The next prime is 1672556357. The reversal of 1672556320 is 236552761.

It is a self number, because there is not a number n which added to its sum of digits gives 1672556320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1327851 + ... + 1329109.

It is an arithmetic number, because the mean of its divisors is an integer number (30243780).

Almost surely, 2^1672556320 is an apocalyptic number.

1672556320 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 1672556320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177552160).

1672556320 is an abundant number, since it is smaller than the sum of its proper divisors (2682548000).

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

1672556320 is a wasteful number, since it uses less digits than its factorization.

1672556320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 1672556320 is about 40896.8986599229. The cubic root of 1672556320 is about 1187.0260508649.

The spelling of 1672556320 in words is "one billion, six hundred seventy-two million, five hundred fifty-six thousand, three hundred twenty".