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30786232 = 2319673023
BaseRepresentation
bin111010101110…
…0001010111000
32010221002202211
41311130022320
530340124412
63015504504
7522451531
oct165341270
963832684
1030786232
1116418174
12a388134
1364bbb09
144135688
152a81ca7
hex1d5c2b8

30786232 has 32 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 14360544.

The previous prime is 30786227. The next prime is 30786233. The reversal of 30786232 is 23268703.

It is a junction number, because it is equal to n+sod(n) for n = 30786194 and 30786203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30786233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8673 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (1927800).

Almost surely, 230786232 is an apocalyptic number.

It is an amenable number.

30786232 is an abundant number, since it is smaller than the sum of its proper divisors (30903368).

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

30786232 is a wasteful number, since it uses less digits than its factorization.

30786232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30786232 is about 5548.5342208551. The cubic root of 30786232 is about 313.4143274347.

The spelling of 30786232 in words is "thirty million, seven hundred eighty-six thousand, two hundred thirty-two".

Divisors: 1 2 4 8 19 38 67 76 134 152 268 536 1273 2546 3023 5092 6046 10184 12092 24184 57437 114874 202541 229748 405082 459496 810164 1620328 3848279 7696558 15393116 30786232