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76701220 = 2253835061
BaseRepresentation
bin1001001001001…
…01111000100100
312100022211021221
410210211320210
5124113414340
611335550124
71620643501
oct444457044
9170284257
1076701220
113a328842
122182b344
1312b76a4b
14a2884a8
156b0144a
hex4925e24

76701220 has 12 divisors (see below), whose sum is σ = 161072604. Its totient is φ = 30680480.

The previous prime is 76701211. The next prime is 76701221. The reversal of 76701220 is 2210767.

It can be written as a sum of positive squares in 2 ways, for example, as 43454464 + 33246756 = 6592^2 + 5766^2 .

It is not an unprimeable number, because it can be changed into a prime (76701221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917511 + ... + 1917550.

It is an arithmetic number, because the mean of its divisors is an integer number (13422717).

Almost surely, 276701220 is an apocalyptic number.

It is an amenable number.

76701220 is an abundant number, since it is smaller than the sum of its proper divisors (84371384).

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

76701220 is a wasteful number, since it uses less digits than its factorization.

76701220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835070 (or 3835068 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 76701220 is about 8757.9232698169. The cubic root of 76701220 is about 424.8811109205.

Adding to 76701220 its reverse (2210767), we get a palindrome (78911987).

The spelling of 76701220 in words is "seventy-six million, seven hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 3835061 7670122 15340244 19175305 38350610 76701220