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1244440100 = 225221435807
BaseRepresentation
bin100101000101100…
…1010011000100100
310012201122002220002
41022023022120210
510022034040400
6323252400432
742560365151
oct11213123044
93181562802
101244440100
115894aa2a2
122a8916118
1316aa83cb7
14bb3bb228
15743b7ed5
hex4a2ca624

1244440100 has 36 divisors (see below), whose sum is σ = 2702160384. Its totient is φ = 497458080.

The previous prime is 1244440039. The next prime is 1244440151. The reversal of 1244440100 is 10444421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211397 + ... + 217203.

Almost surely, 21244440100 is an apocalyptic number.

1244440100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244440100 is an abundant number, since it is smaller than the sum of its proper divisors (1457720284).

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

1244440100 is a wasteful number, since it uses less digits than its factorization.

1244440100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964 (or 7957 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1244440100 is about 35276.6225707621. The cubic root of 1244440100 is about 1075.6178456605.

Adding to 1244440100 its reverse (10444421), we get a palindrome (1254884521).

The spelling of 1244440100 in words is "one billion, two hundred forty-four million, four hundred forty thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 2143 4286 5807 8572 10715 11614 21430 23228 29035 42860 53575 58070 107150 116140 145175 214300 290350 580700 12444401 24888802 49777604 62222005 124444010 248888020 311110025 622220050 1244440100