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30889752 = 2334792687
BaseRepresentation
bin111010111010…
…1011100011000
32011010100202220
41311311130120
530401433002
63022024040
7523362405
oct165653430
964110686
1030889752
1116488a23
12a418020
136526c7a
1441612ac
152aa27bc
hex1d75718

30889752 has 32 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 10271264.

The previous prime is 30889741. The next prime is 30889753. The reversal of 30889752 is 25798803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30889753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10153 + ... + 12839.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 230889752 is an apocalyptic number.

It is an amenable number.

30889752 is an abundant number, since it is smaller than the sum of its proper divisors (46524648).

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

30889752 is a wasteful number, since it uses less digits than its factorization.

30889752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175 (or 3171 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 30889752 is about 5557.8549819152. The cubic root of 30889752 is about 313.7652240461.

The spelling of 30889752 in words is "thirty million, eight hundred eighty-nine thousand, seven hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 24 479 958 1437 1916 2687 2874 3832 5374 5748 8061 10748 11496 16122 21496 32244 64488 1287073 2574146 3861219 5148292 7722438 10296584 15444876 30889752