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1040200180 = 225281185089
BaseRepresentation
bin111110000000000…
…011000111110100
32200111022122101121
4332000003013310
54112242401210
6251115033324
734530361405
oct7600030764
92614278347
101040200180
11494190878
1225043b844
13137673b86
149c2139ac
15614c26da
hex3e0031f4

1040200180 has 24 divisors (see below), whose sum is σ = 2192205960. Its totient is φ = 414597120.

The previous prime is 1040200171. The next prime is 1040200181. The reversal of 1040200180 is 810020401.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116769636 + 923430544 = 10806^2 + 30388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040200181) 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 7 ways as a sum of consecutive naturals, for example, 86925 + ... + 98164.

It is an arithmetic number, because the mean of its divisors is an integer number (91341915).

Almost surely, 21040200180 is an apocalyptic number.

1040200180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040200180 is an abundant number, since it is smaller than the sum of its proper divisors (1152005780).

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

1040200180 is a wasteful number, since it uses less digits than its factorization.

1040200180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185379 (or 185377 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1040200180 is about 32252.1345030062. The cubic root of 1040200180 is about 1013.2244042170.

Adding to 1040200180 its reverse (810020401), we get a palindrome (1850220581).

The spelling of 1040200180 in words is "one billion, forty million, two hundred thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 281 562 1124 1405 2810 5620 185089 370178 740356 925445 1850890 3701780 52010009 104020018 208040036 260050045 520100090 1040200180