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30080740 = 2251504037
BaseRepresentation
bin111001010111…
…1111011100100
32002121021000111
41302233323210
530200040430
62552422404
7513452644
oct162577344
962537014
1030080740
1115a86118
12a0a7a04
136302971
143dd0524
152992c2a
hex1cafee4

30080740 has 12 divisors (see below), whose sum is σ = 63169596. Its totient is φ = 12032288.

The previous prime is 30080731. The next prime is 30080759. The reversal of 30080740 is 4708003.

It can be written as a sum of positive squares in 2 ways, for example, as 23444964 + 6635776 = 4842^2 + 2576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751999 + ... + 752038.

It is an arithmetic number, because the mean of its divisors is an integer number (5264133).

Almost surely, 230080740 is an apocalyptic number.

It is an amenable number.

30080740 is an abundant number, since it is smaller than the sum of its proper divisors (33088856).

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

30080740 is a wasteful number, since it uses less digits than its factorization.

30080740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504046 (or 1504044 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 30080740 is about 5484.5911424645. The cubic root of 30080740 is about 311.0017541765.

Adding to 30080740 its reverse (4708003), we get a palindrome (34788743).

The spelling of 30080740 in words is "thirty million, eighty thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 1504037 3008074 6016148 7520185 15040370 30080740