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8130004 = 2211811721
BaseRepresentation
bin11111000000110111010100
3120022001021021
4133000313110
54040130004
6450130524
7126050431
oct37006724
916261237
108130004
114653213
122880a44
1318b866c
141118b88
15aa8d54
hex7c0dd4

8130004 has 12 divisors (see below), whose sum is σ = 14247828. Its totient is φ = 4059200.

The previous prime is 8129999. The next prime is 8130007. The reversal of 8130004 is 4000318.

It can be written as a sum of positive squares in 2 ways, for example, as 6812100 + 1317904 = 2610^2 + 1148^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8130004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130007) 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, 3864 + ... + 5584.

It is an arithmetic number, because the mean of its divisors is an integer number (1187319).

Almost surely, 28130004 is an apocalyptic number.

It is an amenable number.

8130004 is a deficient number, since it is larger than the sum of its proper divisors (6117824).

8130004 is a wasteful number, since it uses less digits than its factorization.

8130004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906 (or 2904 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 8130004 is about 2851.3161873072. The cubic root of 8130004 is about 201.0775506632.

The spelling of 8130004 in words is "eight million, one hundred thirty thousand, four".

Divisors: 1 2 4 1181 1721 2362 3442 4724 6884 2032501 4065002 8130004