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28906260 = 22353115541
BaseRepresentation
bin110111001000…
…1001100010100
32000101120221020
41232101030110
524400000020
62511321140
7500461545
oct156211424
960346836
1028906260
1115353779
1298201b0
135cb11c6
143ba64cc
15280ec40
hex1b91314

28906260 has 48 divisors (see below), whose sum is σ = 83553792. Its totient is φ = 7459200.

The previous prime is 28906259. The next prime is 28906261. The reversal of 28906260 is 6260982.

It is an interprime number because it is at equal distance from previous prime (28906259) and next prime (28906261).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28906261) 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 15 ways as a sum of consecutive naturals, for example, 5911 + ... + 9630.

It is an arithmetic number, because the mean of its divisors is an integer number (1740704).

Almost surely, 228906260 is an apocalyptic number.

28906260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28906260 is an abundant number, since it is smaller than the sum of its proper divisors (54647532).

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

28906260 is a wasteful number, since it uses less digits than its factorization.

28906260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15584 (or 15582 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28906260 is about 5376.4542218827. The cubic root of 28906260 is about 306.9002919383.

The spelling of 28906260 in words is "twenty-eight million, nine hundred six thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 31 60 62 93 124 155 186 310 372 465 620 930 1860 15541 31082 46623 62164 77705 93246 155410 186492 233115 310820 466230 481771 932460 963542 1445313 1927084 2408855 2890626 4817710 5781252 7226565 9635420 14453130 28906260