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80072470 = 259198713
BaseRepresentation
bin1001100010111…
…00111100010110
312120200002210001
410301130330112
5130444304340
611540121514
71661414302
oct461347426
9176602701
1080072470
11412206a5
122299629a
131378737a
14a8c4d02
15706a29a
hex4c5cf16

80072470 has 16 divisors (see below), whose sum is σ = 144303840. Its totient is φ = 31990464.

The previous prime is 80072449. The next prime is 80072471. The reversal of 80072470 is 7427008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80072471) 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, 4834 + ... + 13546.

It is an arithmetic number, because the mean of its divisors is an integer number (9018990).

Almost surely, 280072470 is an apocalyptic number.

80072470 is a deficient number, since it is larger than the sum of its proper divisors (64231370).

80072470 is a wasteful number, since it uses less digits than its factorization.

80072470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 80072470 is about 8948.3221891034. The cubic root of 80072470 is about 431.0170086400.

Adding to 80072470 its reverse (7427008), we get a palindrome (87499478).

The spelling of 80072470 in words is "eighty million, seventy-two thousand, four hundred seventy".

Divisors: 1 2 5 10 919 1838 4595 8713 9190 17426 43565 87130 8007247 16014494 40036235 80072470