1072173180 has 144 divisors (see below), whose sum is σ = 3327730560. Its totient is φ = 257677056.

The previous prime is 1072173169. The next prime is 1072173257. The reversal of 1072173180 is 813712701.

It is a super-2 number, since 2×1072173180² = 2299110655822624800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 434791 + ... + 437249.

It is an arithmetic number, because the mean of its divisors is an integer number (23109240).

Almost surely, 2^1072173180 is an apocalyptic number.

1072173180 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 1072173180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663865280).

1072173180 is an abundant number, since it is smaller than the sum of its proper divisors (2255557380).

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

1072173180 is a wasteful number, since it uses less digits than its factorization.

1072173180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540 (or 2525 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 1072173180 is about 32744.0556437348. The cubic root of 1072173180 is about 1023.5010984723.

Adding to 1072173180 its reverse (813712701), we get a palindrome (1885885881).

The spelling of 1072173180 in words is "one billion, seventy-two million, one hundred seventy-three thousand, one hundred eighty".