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30716980 = 2257219407
BaseRepresentation
bin111010100101…
…1010000110100
32010210120202221
41311023100310
530330420410
63014212124
7522042610
oct165132064
963716687
1030716980
1116380138
12a354044
136496438
144118340
152a6b4da
hex1d4b434

30716980 has 24 divisors (see below), whose sum is σ = 73721088. Its totient is φ = 10531488.

The previous prime is 30716971. The next prime is 30716999. The reversal of 30716980 is 8961703.

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, 109564 + ... + 109843.

It is an arithmetic number, because the mean of its divisors is an integer number (3071712).

Almost surely, 230716980 is an apocalyptic number.

It is an amenable number.

30716980 is an abundant number, since it is smaller than the sum of its proper divisors (43004108).

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

30716980 is a wasteful number, since it uses less digits than its factorization.

30716980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219423 (or 219421 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 30716980 is about 5542.2901403662. The cubic root of 30716980 is about 313.1791480229.

The spelling of 30716980 in words is "thirty million, seven hundred sixteen thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 219407 438814 877628 1097035 1535849 2194070 3071698 4388140 6143396 7679245 15358490 30716980