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75750028 = 22171113971
BaseRepresentation
bin1001000001111…
…01101010001100
312021112111111121
410200331222030
5123343000103
611303330324
71606602364
oct440755214
9167474447
1075750028
1139839132
12214509a4
1312902b03
14a0bb9a4
1569b46bd
hex483da8c

75750028 has 12 divisors (see below), whose sum is σ = 140360472. Its totient is φ = 35647040.

The previous prime is 75750023. The next prime is 75750029. The reversal of 75750028 is 82005757.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 75749975 and 75750002.

It is not an unprimeable number, because it can be changed into a prime (75750023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556918 + ... + 557053.

It is an arithmetic number, because the mean of its divisors is an integer number (11696706).

Almost surely, 275750028 is an apocalyptic number.

It is an amenable number.

75750028 is a deficient number, since it is larger than the sum of its proper divisors (64610444).

75750028 is a wasteful number, since it uses less digits than its factorization.

75750028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113992 (or 1113990 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 75750028 is about 8703.4492013224. The cubic root of 75750028 is about 423.1174460155.

The spelling of 75750028 in words is "seventy-five million, seven hundred fifty thousand, twenty-eight".

Divisors: 1 2 4 17 34 68 1113971 2227942 4455884 18937507 37875014 75750028