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50087988 = 22322947977
BaseRepresentation
bin1011111100010…
…0100000110100
310111020201210200
42333010200310
5100310303423
64545320500
71145512056
oct277044064
9114221720
1050087988
1126300935
1214936130
13a4b9482
14691b8d6
1545e5d43
hex2fc4834

50087988 has 36 divisors (see below), whose sum is σ = 130979940. Its totient is φ = 16119936.

The previous prime is 50087963. The next prime is 50087993. The reversal of 50087988 is 88978005.

It can be written as a sum of positive squares in 2 ways, for example, as 42536484 + 7551504 = 6522^2 + 2748^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 22945 + ... + 25032.

Almost surely, 250087988 is an apocalyptic number.

50087988 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

50087988 is an abundant number, since it is smaller than the sum of its proper divisors (80891952).

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

50087988 is a wasteful number, since it uses less digits than its factorization.

50087988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48016 (or 48011 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 50087988 is about 7077.2867682467. The cubic root of 50087988 is about 368.6191236019.

It can be divided in two parts, 5008 and 7988, that added together give a square (12996 = 1142).

The spelling of 50087988 in words is "fifty million, eighty-seven thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 29 36 58 87 116 174 261 348 522 1044 47977 95954 143931 191908 287862 431793 575724 863586 1391333 1727172 2782666 4173999 5565332 8347998 12521997 16695996 25043994 50087988