1676742172 has 144 divisors (see below), whose sum is σ = 3789287040. Its totient is φ = 644692608.

The previous prime is 1676742163. The next prime is 1676742173. The reversal of 1676742172 is 2712476761.

It is a super-2 number, since 2×1676742172² = 5622928622726555168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1676742173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5924743 + ... + 5925025.

Almost surely, 2^1676742172 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 1676742172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894643520).

1676742172 is an abundant number, since it is smaller than the sum of its proper divisors (2112544868).

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

1676742172 is a wasteful number, since it uses less digits than its factorization.

1676742172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 1676742172 is about 40948.0423463686. The cubic root of 1676742172 is about 1188.0154696864.

The spelling of 1676742172 in words is "one billion, six hundred seventy-six million, seven hundred forty-two thousand, one hundred seventy-two".