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307620 = 223251709
BaseRepresentation
bin1001011000110100100
3120121222100
41023012210
534320440
610332100
72420565
oct1130644
9517870
10307620
111a0135
1212a030
13aa031
148016c
1561230
hex4b1a4

307620 has 36 divisors (see below), whose sum is σ = 933660. Its totient is φ = 81984.

The previous prime is 307609. The next prime is 307627. The reversal of 307620 is 26703.

It can be written as a sum of positive squares in 2 ways, for example, as 82944 + 224676 = 288^2 + 474^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 307593 and 307602.

It is not an unprimeable number, because it can be changed into a prime (307627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (25935).

2307620 is an apocalyptic number.

307620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

307620 is an abundant number, since it is smaller than the sum of its proper divisors (626040).

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

307620 is a wasteful number, since it uses less digits than its factorization.

307620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 307620 is about 554.6350151226. The cubic root of 307620 is about 67.5053493703.

The spelling of 307620 in words is "three hundred seven thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 1709 3418 5127 6836 8545 10254 15381 17090 20508 25635 30762 34180 51270 61524 76905 102540 153810 307620