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180000372 = 22315000031
BaseRepresentation
bin10101011101010…
…01011001110100
3110112200222002110
422232221121310
5332040002442
625510011020
74313656266
oct1256513164
9415628073
10180000372
1192672a42
1250346a70
132b3a40c6
1419c97b36
1510c0869c
hexaba9674

180000372 has 12 divisors (see below), whose sum is σ = 420000896. Its totient is φ = 60000120.

The previous prime is 180000371. The next prime is 180000377. The reversal of 180000372 is 273000081.

180000372 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

180000372 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180000371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7500004 + ... + 7500027.

Almost surely, 2180000372 is an apocalyptic number.

180000372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180000372 is an abundant number, since it is smaller than the sum of its proper divisors (240000524).

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

180000372 is a wasteful number, since it uses less digits than its factorization.

180000372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000038 (or 15000036 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 180000372 is about 13416.4217286130. The cubic root of 180000372 is about 564.6220062899.

The spelling of 180000372 in words is "one hundred eighty million, three hundred seventy-two", and thus it is an aban number.

Divisors: 1 2 3 4 6 12 15000031 30000062 45000093 60000124 90000186 180000372