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30157412 = 2217874219
BaseRepresentation
bin111001100001…
…0101001100100
32002202011012012
41303002221210
530210014122
62554213352
7514222325
oct163025144
962664165
1030157412
111602878a
12a124258
13632b82c
14401044c
1529aa7e2
hex1cc2a64

30157412 has 12 divisors (see below), whose sum is σ = 52817520. Its totient is φ = 15066696.

The previous prime is 30157403. The next prime is 30157417. The reversal of 30157412 is 21475103.

It is not an unprimeable number, because it can be changed into a prime (30157417) by changing a digit.

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, 5039 + ... + 9257.

It is an arithmetic number, because the mean of its divisors is an integer number (4401460).

Almost surely, 230157412 is an apocalyptic number.

It is an amenable number.

30157412 is a deficient number, since it is larger than the sum of its proper divisors (22660108).

30157412 is a wasteful number, since it uses less digits than its factorization.

30157412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6010 (or 6008 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 30157412 is about 5491.5764585408. The cubic root of 30157412 is about 311.2657646999.

The spelling of 30157412 in words is "thirty million, one hundred fifty-seven thousand, four hundred twelve".

Divisors: 1 2 4 1787 3574 4219 7148 8438 16876 7539353 15078706 30157412