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280801030 = 25472692221
BaseRepresentation
bin10000101111001…
…010111100000110
3201120101011121011
4100233022330012
51033341113110
643510312434
76646524616
oct2057127406
9646334534
10280801030
11134560a74
127a05871a
1346238173
1429416a46
15199ba48a
hex10bcaf06

280801030 has 32 divisors (see below), whose sum is σ = 518348160. Its totient is φ = 109472640.

The previous prime is 280801021. The next prime is 280801039. The reversal of 280801030 is 30108082.

It is an interprime number because it is at equal distance from previous prime (280801021) and next prime (280801039).

It is a junction number, because it is equal to n+sod(n) for n = 280800992 and 280801010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280801039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125320 + ... + 127540.

It is an arithmetic number, because the mean of its divisors is an integer number (16198380).

Almost surely, 2280801030 is an apocalyptic number.

280801030 is a deficient number, since it is larger than the sum of its proper divisors (237547130).

280801030 is a wasteful number, since it uses less digits than its factorization.

280801030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 280801030 is about 16757.1187857579. The cubic root of 280801030 is about 654.8365305014.

The spelling of 280801030 in words is "two hundred eighty million, eight hundred one thousand, thirty".

Divisors: 1 2 5 10 47 94 235 269 470 538 1345 2221 2690 4442 11105 12643 22210 25286 63215 104387 126430 208774 521935 597449 1043870 1194898 2987245 5974490 28080103 56160206 140400515 280801030