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7980049 = 711372801
BaseRepresentation
bin11110011100010000010001
3120000102120101
4132130100101
54020330144
6443012401
7124554310
oct36342021
916012511
107980049
114560590
12280a101
13186532c
1410ba277
15a796d4
hex79c411

7980049 has 16 divisors (see below), whose sum is σ = 10221696. Its totient is φ = 6048000.

The previous prime is 7980047. The next prime is 7980059. The reversal of 7980049 is 9400897.

It is a happy number.

It is not a de Polignac number, because 7980049 - 21 = 7980047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7980041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449 + ... + 4249.

It is an arithmetic number, because the mean of its divisors is an integer number (638856).

Almost surely, 27980049 is an apocalyptic number.

It is an amenable number.

7980049 is a deficient number, since it is larger than the sum of its proper divisors (2241647).

7980049 is a wasteful number, since it uses less digits than its factorization.

7980049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7980049 is about 2824.8980512578. The cubic root of 7980049 is about 199.8336032657.

The spelling of 7980049 in words is "seven million, nine hundred eighty thousand, forty-nine".

Divisors: 1 7 11 37 77 259 407 2801 2849 19607 30811 103637 215677 725459 1140007 7980049