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28625350 = 2521347937
BaseRepresentation
bin110110100110…
…0100111000110
31222212022121011
41231030213012
524312002400
62501312434
7465211555
oct155144706
958768534
1028625350
1115181716
12970571a
135c133a0
143b31d9c
1527a68ba
hex1b4c9c6

28625350 has 48 divisors (see below), whose sum is σ = 58621248. Its totient is φ = 10333440.

The previous prime is 28625347. The next prime is 28625351. The reversal of 28625350 is 5352682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28625351) 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 23 ways as a sum of consecutive naturals, for example, 30082 + ... + 31018.

It is an arithmetic number, because the mean of its divisors is an integer number (1221276).

Almost surely, 228625350 is an apocalyptic number.

28625350 is an abundant number, since it is smaller than the sum of its proper divisors (29995898).

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

28625350 is a wasteful number, since it uses less digits than its factorization.

28625350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 28625350 is about 5350.2663485101. The cubic root of 28625350 is about 305.9029053875.

The spelling of 28625350 in words is "twenty-eight million, six hundred twenty-five thousand, three hundred fifty".

Divisors: 1 2 5 10 13 25 26 47 50 65 94 130 235 325 470 611 650 937 1175 1222 1874 2350 3055 4685 6110 9370 12181 15275 23425 24362 30550 44039 46850 60905 88078 121810 220195 304525 440390 572507 609050 1100975 1145014 2201950 2862535 5725070 14312675 28625350