1676721030 has 64 divisors (see below), whose sum is σ = 4128807168. Its totient is φ = 435634560.

The previous prime is 1676720993. The next prime is 1676721031. The reversal of 1676721030 is 301276761.

It is a super-2 number, since 2×1676721030² = 5622786824888521800, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1676720982 and 1676721000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1676721031) 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 31 ways as a sum of consecutive naturals, for example, 191529 + ... + 200091.

It is an arithmetic number, because the mean of its divisors is an integer number (64512612).

Almost surely, 2^1676721030 is an apocalyptic number.

1676721030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1676721030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2064403584).

1676721030 is an abundant number, since it is smaller than the sum of its proper divisors (2452086138).

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

1676721030 is a wasteful number, since it uses less digits than its factorization.

1676721030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8741.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 1676721030 is about 40947.7841891353. The cubic root of 1676721030 is about 1188.0104764463.

Adding to 1676721030 its reverse (301276761), we get a palindrome (1977997791).

The spelling of 1676721030 in words is "one billion, six hundred seventy-six million, seven hundred twenty-one thousand, thirty".