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30980948 = 2264711971
BaseRepresentation
bin111011000101…
…1101101010100
32011021222212112
41312023231110
530412342243
63024010152
7524222315
oct166135524
964258775
1030980948
1116540499
12a460958
13655962b
14418660c
152abe818
hex1d8bb54

30980948 has 12 divisors (see below), whose sum is σ = 54304992. Its totient is φ = 15465240.

The previous prime is 30980947. The next prime is 30980993. The reversal of 30980948 is 84908903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30980947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3398 + ... + 8573.

It is an arithmetic number, because the mean of its divisors is an integer number (4525416).

Almost surely, 230980948 is an apocalyptic number.

It is an amenable number.

30980948 is a deficient number, since it is larger than the sum of its proper divisors (23324044).

30980948 is a wasteful number, since it uses less digits than its factorization.

30980948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12622 (or 12620 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 30980948 is about 5566.0531797675. The cubic root of 30980948 is about 314.0736976594.

The spelling of 30980948 in words is "thirty million, nine hundred eighty thousand, nine hundred forty-eight".

Divisors: 1 2 4 647 1294 2588 11971 23942 47884 7745237 15490474 30980948