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80370792 = 233613781
BaseRepresentation
bin1001100101001…
…01110001101000
312121020021000000
410302211301220
5131033331132
611550343000
71664066115
oct462456150
9177207000
1080370792
1141404847
1222abaa60
13138600a8
14a96190c
1570c887c
hex4ca5c68

80370792 has 56 divisors (see below), whose sum is σ = 225955890. Its totient is φ = 26788320.

The previous prime is 80370791. The next prime is 80370811. The reversal of 80370792 is 29707308.

It can be written as a sum of positive squares in only one way, i.e., 66487716 + 13883076 = 8154^2 + 3726^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80370791) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1059 + ... + 12722.

Almost surely, 280370792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80370792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112977945).

80370792 is an abundant number, since it is smaller than the sum of its proper divisors (145585098).

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

80370792 is a wasteful number, since it uses less digits than its factorization.

80370792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13805 (or 13786 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 80370792 is about 8964.9758504973. The cubic root of 80370792 is about 431.5516181093.

The spelling of 80370792 in words is "eighty million, three hundred seventy thousand, seven hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 243 324 486 648 729 972 1458 1944 2916 5832 13781 27562 41343 55124 82686 110248 124029 165372 248058 330744 372087 496116 744174 992232 1116261 1488348 2232522 2976696 3348783 4465044 6697566 8930088 10046349 13395132 20092698 26790264 40185396 80370792