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30626020 = 22510314867
BaseRepresentation
bin111010011010…
…1000011100100
32010121222000001
41310311003210
530320013040
63012231044
7521213455
oct164650344
963558001
1030626020
1116318867
12a30b484
136463c09
1440d312c
152a4e59a
hex1d350e4

30626020 has 24 divisors (see below), whose sum is σ = 64943424. Its totient is φ = 12130656.

The previous prime is 30625979. The next prime is 30626023. The reversal of 30626020 is 2062603.

It is not an unprimeable number, because it can be changed into a prime (30626023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5374 + ... + 9493.

It is an arithmetic number, because the mean of its divisors is an integer number (2705976).

Almost surely, 230626020 is an apocalyptic number.

It is an amenable number.

30626020 is an abundant number, since it is smaller than the sum of its proper divisors (34317404).

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

30626020 is a wasteful number, since it uses less digits than its factorization.

30626020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14979 (or 14977 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30626020 is about 5534.0780623334. The cubic root of 30626020 is about 312.8697106990.

Adding to 30626020 its reverse (2062603), we get a palindrome (32688623).

The spelling of 30626020 in words is "thirty million, six hundred twenty-six thousand, twenty".

Divisors: 1 2 4 5 10 20 103 206 412 515 1030 2060 14867 29734 59468 74335 148670 297340 1531301 3062602 6125204 7656505 15313010 30626020