182921380 has 12 divisors (see below), whose sum is σ = 384134940. Its totient is φ = 73168544.

The previous prime is 182921317. The next prime is 182921383. The reversal of 182921380 is 83129281.

It can be written as a sum of positive squares in 2 ways, for example, as 44435556 + 138485824 = 6666^2 + 11768^2 .

It is a super-2 number, since 2×182921380² = 66920462522208800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (182921383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573015 + ... + 4573054.

It is an arithmetic number, because the mean of its divisors is an integer number (32011245).

Almost surely, 2^182921380 is an apocalyptic number.

182921380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

182921380 is an abundant number, since it is smaller than the sum of its proper divisors (201213560).

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

182921380 is a wasteful number, since it uses less digits than its factorization.

182921380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9146078 (or 9146076 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 182921380 is about 13524.8430674814. The cubic root of 182921380 is about 567.6598215985.

The spelling of 182921380 in words is "one hundred eighty-two million, nine hundred twenty-one thousand, three hundred eighty".