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307020 = 223571743
BaseRepresentation
bin1001010111101001100
3120121011010
41022331030
534311040
610325220
72416050
oct1127514
9517133
10307020
1119a73a
12129810
13a998c
147dc60
1560e80
hex4af4c

307020 has 96 divisors (see below), whose sum is σ = 1064448. Its totient is φ = 64512.

The previous prime is 307019. The next prime is 307031. The reversal of 307020 is 20703.

It is a super-2 number, since 2×3070202 = 188522560800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 306987 and 307005.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 307020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7119 + ... + 7161.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2307020 is an apocalyptic number.

307020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532224).

307020 is an abundant number, since it is smaller than the sum of its proper divisors (757428).

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

307020 is a wasteful number, since it uses less digits than its factorization.

307020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 307020 is about 554.0938548658. The cubic root of 307020 is about 67.4614320140.

Adding to 307020 its reverse (20703), we get a palindrome (327723).

The spelling of 307020 in words is "three hundred seven thousand, twenty", and thus it is an iban number.