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75380044 = 2218845011
BaseRepresentation
bin1000111111000…
…11010101001100
312020211200222111
410133203111030
5123244130134
611251353404
71603501615
oct437432514
9166750874
1075380044
1139606163
12212b2864
131280359c
14a022c0c
15693ec64
hex47e354c

75380044 has 6 divisors (see below), whose sum is σ = 131915084. Its totient is φ = 37690020.

The previous prime is 75380027. The next prime is 75380047. The reversal of 75380044 is 44008357.

It is a junction number, because it is equal to n+sod(n) for n = 75379988 and 75380015.

It is not an unprimeable number, because it can be changed into a prime (75380047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9422502 + ... + 9422509.

Almost surely, 275380044 is an apocalyptic number.

It is an amenable number.

75380044 is a deficient number, since it is larger than the sum of its proper divisors (56535040).

75380044 is a wasteful number, since it uses less digits than its factorization.

75380044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18845015 (or 18845013 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 75380044 is about 8682.1681623889. The cubic root of 75380044 is about 422.4274473646.

The spelling of 75380044 in words is "seventy-five million, three hundred eighty thousand, forty-four".

Divisors: 1 2 4 18845011 37690022 75380044