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80074780 = 22517323143
BaseRepresentation
bin1001100010111…
…01100000011100
312120200012221121
410301131200130
5130444343110
611540140324
71661424112
oct461354034
9176605847
1080074780
1141222405
12229976a4
1313788436
14a8c5ab2
15706acda
hex4c5d81c

80074780 has 24 divisors (see below), whose sum is σ = 169136352. Its totient is φ = 31843392.

The previous prime is 80074769. The next prime is 80074781. The reversal of 80074780 is 8747008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80074781) 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, 8112 + ... + 15031.

It is an arithmetic number, because the mean of its divisors is an integer number (7047348).

Almost surely, 280074780 is an apocalyptic number.

It is an amenable number.

80074780 is an abundant number, since it is smaller than the sum of its proper divisors (89061572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80074780 is a wasteful number, since it uses less digits than its factorization.

80074780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23325 (or 23323 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 80074780 is about 8948.4512626487. The cubic root of 80074780 is about 431.0211533842.

The spelling of 80074780 in words is "eighty million, seventy-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 173 346 692 865 1730 3460 23143 46286 92572 115715 231430 462860 4003739 8007478 16014956 20018695 40037390 80074780