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140049144 = 23323752571
BaseRepresentation
bin10000101100011…
…11101011111000
3100202112020022100
420112033223320
5241323033034
621521423400
73320253354
oct1026175370
9322466270
10140049144
1172065aa4
123aa9ab60
1323026821
1414858464
15c466099
hex858faf8

140049144 has 48 divisors (see below), whose sum is σ = 389558520. Its totient is φ = 45420480.

The previous prime is 140049109. The next prime is 140049193. The reversal of 140049144 is 441940041.

It is a super-2 number, since 2×1400491442 = 39227525470265472, which contains 22 as substring.

It is a congruent number.

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, 23622 + ... + 28949.

Almost surely, 2140049144 is an apocalyptic number.

It is an amenable number.

140049144 is an abundant number, since it is smaller than the sum of its proper divisors (249509376).

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

140049144 is a wasteful number, since it uses less digits than its factorization.

140049144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52620 (or 52613 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140049144 is about 11834.2360970195. The cubic root of 140049144 is about 519.3101602036.

Adding to 140049144 its reverse (441940041), we get a palindrome (581989185).

The spelling of 140049144 in words is "one hundred forty million, forty-nine thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 37 72 74 111 148 222 296 333 444 666 888 1332 2664 52571 105142 157713 210284 315426 420568 473139 630852 946278 1261704 1892556 1945127 3785112 3890254 5835381 7780508 11670762 15561016 17506143 23341524 35012286 46683048 70024572 140049144