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30488120 = 2351358631
BaseRepresentation
bin111010001001…
…1011000111000
32010100221211122
41310103120320
530301104440
63005244412
7520100435
oct164233070
963327748
1030488120
11162341a3
12a263708
136416210
144098b8c
152a237b5
hex1d13638

30488120 has 32 divisors (see below), whose sum is σ = 73876320. Its totient is φ = 11256960.

The previous prime is 30488119. The next prime is 30488131. The reversal of 30488120 is 2188403.

It is a super-2 number, since 2×304881202 = 1859050922268800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 30488120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28796 + ... + 29835.

It is an arithmetic number, because the mean of its divisors is an integer number (2308635).

Almost surely, 230488120 is an apocalyptic number.

It is an amenable number.

30488120 is an abundant number, since it is smaller than the sum of its proper divisors (43388200).

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

30488120 is a wasteful number, since it uses less digits than its factorization.

30488120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58655 (or 58651 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 30488120 is about 5521.6048391749. The cubic root of 30488120 is about 312.3994172294.

The spelling of 30488120 in words is "thirty million, four hundred eighty-eight thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 58631 117262 234524 293155 469048 586310 762203 1172620 1524406 2345240 3048812 3811015 6097624 7622030 15244060 30488120