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30900268 = 2271103581
BaseRepresentation
bin111010111100…
…0000000101100
32011010220012101
41311320000230
530402302033
63022144444
7523435150
oct165700054
964126171
1030900268
1116495913
12a422124
13652b9a9
144165060
152aa597d
hex1d7802c

30900268 has 12 divisors (see below), whose sum is σ = 61800592. Its totient is φ = 13242960.

The previous prime is 30900257. The next prime is 30900277. The reversal of 30900268 is 86200903.

30900268 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1103581 = 30900268 / (3 + 0 + 9 + 0 + 0 + 2 + 6 + 8).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 551763 + ... + 551818.

Almost surely, 230900268 is an apocalyptic number.

It is an amenable number.

30900268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30900268 is a wasteful number, since it uses less digits than its factorization.

30900268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103592 (or 1103590 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30900268 is about 5558.8009498452. The cubic root of 30900268 is about 313.8008257211.

The spelling of 30900268 in words is "thirty million, nine hundred thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 28 1103581 2207162 4414324 7725067 15450134 30900268