1724672380 has 72 divisors (see below), whose sum is σ = 3801820176. Its totient is φ = 656839680.

The previous prime is 1724672371. The next prime is 1724672381. The reversal of 1724672380 is 832764271.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1724672381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1445064 + ... + 1446256.

It is an arithmetic number, because the mean of its divisors is an integer number (52803058).

Almost surely, 2^1724672380 is an apocalyptic number.

1724672380 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 1724672380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900910088).

1724672380 is an abundant number, since it is smaller than the sum of its proper divisors (2077147796).

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

1724672380 is a wasteful number, since it uses less digits than its factorization.

1724672380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 1724672380 is about 41529.1750459842. The cubic root of 1724672380 is about 1199.2292226171.

The spelling of 1724672380 in words is "one billion, seven hundred twenty-four million, six hundred seventy-two thousand, three hundred eighty".