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1900180324 = 2271632231867
BaseRepresentation
bin111000101000010…
…0111001101100100
311220102112011101001
41301100213031210
512342421232244
6512315243044
765042160220
oct16120471544
94812464331
101900180324
11895669669
12450449484
13243897973
14140513780
15b1c465d4
hex71427364

1900180324 has 48 divisors (see below), whose sum is σ = 3842879488. Its totient is φ = 805305888.

The previous prime is 1900180319. The next prime is 1900180339. The reversal of 1900180324 is 4230810091.

It is a happy number.

It is a super-2 number, since 2×19001803242 = 7221370527433489952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1900180292 and 1900180301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016839 + ... + 1018705.

Almost surely, 21900180324 is an apocalyptic number.

1900180324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1900180324 is an abundant number, since it is smaller than the sum of its proper divisors (1942699164).

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

1900180324 is a wasteful number, since it uses less digits than its factorization.

1900180324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1900180324 is about 43591.0578444708. The cubic root of 1900180324 is about 1238.6015112878.

The spelling of 1900180324 in words is "one billion, nine hundred million, one hundred eighty thousand, three hundred twenty-four".

Divisors: 1 2 4 7 14 28 163 223 326 446 652 892 1141 1561 1867 2282 3122 3734 4564 6244 7468 13069 26138 36349 52276 72698 145396 254443 304321 416341 508886 608642 832682 1017772 1217284 1665364 2130247 2914387 4260494 5828774 8520988 11657548 67863583 135727166 271454332 475045081 950090162 1900180324