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28037011147 = 147471901201
BaseRepresentation
bin11010000111001000…
…101101011011001011
32200100221120201220021
4122013020231123023
5424404433324042
620514030241311
72011532443165
oct320710553313
980327521807
1028037011147
11109881864a2
125525656237
13284a7a9032
1414dd865935
15ae1627867
hex68722d6cb

28037011147 has 4 divisors (see below), whose sum is σ = 28038927096. Its totient is φ = 28035095200.

The previous prime is 28037011139. The next prime is 28037011153. The reversal of 28037011147 is 74111073082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74111073082 = 237055536541.

It is a cyclic number.

It is not a de Polignac number, because 28037011147 - 23 = 28037011139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28037011157) 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, 935854 + ... + 965347.

It is an arithmetic number, because the mean of its divisors is an integer number (7009731774).

Almost surely, 228037011147 is an apocalyptic number.

28037011147 is a deficient number, since it is larger than the sum of its proper divisors (1915949).

28037011147 is a wasteful number, since it uses less digits than its factorization.

28037011147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915948.

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 28037011147 in words is "twenty-eight billion, thirty-seven million, eleven thousand, one hundred forty-seven".

Divisors: 1 14747 1901201 28037011147