100673280 has 180 divisors, whose sum is σ = 360598392. Its totient is φ = 26818560.

The previous prime is 100673249. The next prime is 100673291. The reversal of 100673280 is 82376001.

It is a tau number, because it is divible by the number of its divisors (180).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103195 + ... + 104165.

Almost surely, 2^100673280 is an apocalyptic number.

100673280 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 100673280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180299196).

100673280 is an abundant number, since it is smaller than the sum of its proper divisors (259925112).

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

100673280 is an frugal number, since it uses more digits than its factorization.

100673280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 100673280 is about 10033.6075267074. The cubic root of 100673280 is about 465.1982505325.

It can be divided in two parts, 100 and 673280, that added together give a triangular number (673380 = T₁₁₆₀).

The spelling of 100673280 in words is "one hundred million, six hundred seventy-three thousand, two hundred eighty".