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30757412 = 2271098479
BaseRepresentation
bin111010101010…
…1001000100100
32010212122020102
41311111020210
530333214122
63015123232
7522301520
oct165251044
963778212
1030757412
11163a8554
12a373518
1364ab96a
144128d80
152a78492
hex1d55224

30757412 has 12 divisors (see below), whose sum is σ = 61514880. Its totient is φ = 13181736.

The previous prime is 30757373. The next prime is 30757423. The reversal of 30757412 is 21475703.

30757412 is an admirable 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, 549212 + ... + 549267.

It is an arithmetic number, because the mean of its divisors is an integer number (5126240).

Almost surely, 230757412 is an apocalyptic number.

It is an amenable number.

30757412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30757412 is a wasteful number, since it uses less digits than its factorization.

30757412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098490 (or 1098488 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 30757412 is about 5545.9365304699. The cubic root of 30757412 is about 313.3164977625.

The spelling of 30757412 in words is "thirty million, seven hundred fifty-seven thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 1098479 2196958 4393916 7689353 15378706 30757412