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30080660 = 2251504033
BaseRepresentation
bin111001010111…
…1111010010100
32002121020220112
41302233322110
530200040120
62552422152
7513452501
oct162577224
962536815
1030080660
1115a86055
12a0a7958
13630290c
143dd04a8
152992bc5
hex1cafe94

30080660 has 12 divisors (see below), whose sum is σ = 63169428. Its totient is φ = 12032256.

The previous prime is 30080657. The next prime is 30080663. The reversal of 30080660 is 6608003.

It is an interprime number because it is at equal distance from previous prime (30080657) and next prime (30080663).

It can be written as a sum of positive squares in 2 ways, for example, as 5597956 + 24482704 = 2366^2 + 4948^2 .

It is a super-2 number, since 2×300806602 = 1809692212071200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30080663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751997 + ... + 752036.

It is an arithmetic number, because the mean of its divisors is an integer number (5264119).

Almost surely, 230080660 is an apocalyptic number.

It is an amenable number.

30080660 is an abundant number, since it is smaller than the sum of its proper divisors (33088768).

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

30080660 is a wasteful number, since it uses less digits than its factorization.

30080660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504042 (or 1504040 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30080660 is about 5484.5838492998. The cubic root of 30080660 is about 311.0014784723.

Adding to 30080660 its reverse (6608003), we get a palindrome (36688663).

The spelling of 30080660 in words is "thirty million, eighty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 1504033 3008066 6016132 7520165 15040330 30080660