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72867130 = 2571040959
BaseRepresentation
bin1000101011111…
…01110100111010
312002010000220121
410111331310322
5122123222010
611121443454
71543234420
oct425756472
9162100817
1072867130
113814a176
12204a058a
131213385b
14996b110
1565e53da
hex457dd3a

72867130 has 16 divisors (see below), whose sum is σ = 149898240. Its totient is φ = 24982992.

The previous prime is 72867089. The next prime is 72867131. The reversal of 72867130 is 3176827.

It is not an unprimeable number, because it can be changed into a prime (72867131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520410 + ... + 520549.

It is an arithmetic number, because the mean of its divisors is an integer number (9368640).

Almost surely, 272867130 is an apocalyptic number.

72867130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72867130 is an abundant number, since it is smaller than the sum of its proper divisors (77031110).

72867130 is a wasteful number, since it uses less digits than its factorization.

72867130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040973.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 72867130 is about 8536.2245753026. The cubic root of 72867130 is about 417.6801999793.

The spelling of 72867130 in words is "seventy-two million, eight hundred sixty-seven thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 1040959 2081918 5204795 7286713 10409590 14573426 36433565 72867130