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30482780 = 2251524139
BaseRepresentation
bin111010001001…
…0000101011100
32010100200111212
41310102011130
530300422110
63005203552
7520046036
oct164220534
963320455
1030482780
1116230189
12a2605b8
136413963
144096c56
152a21e05
hex1d1215c

30482780 has 12 divisors (see below), whose sum is σ = 64013880. Its totient is φ = 12193104.

The previous prime is 30482761. The next prime is 30482801. The reversal of 30482780 is 8728403.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762050 + ... + 762089.

It is an arithmetic number, because the mean of its divisors is an integer number (5334490).

Almost surely, 230482780 is an apocalyptic number.

It is an amenable number.

30482780 is an abundant number, since it is smaller than the sum of its proper divisors (33531100).

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

30482780 is a wasteful number, since it uses less digits than its factorization.

30482780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524148 (or 1524146 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 30482780 is about 5521.1212629320. The cubic root of 30482780 is about 312.3811772254.

The spelling of 30482780 in words is "thirty million, four hundred eighty-two thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 1524139 3048278 6096556 7620695 15241390 30482780