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30069056 = 261729953
BaseRepresentation
bin111001010110…
…1000101000000
32002120122222202
41302231011000
530144202211
62552252332
7513403613
oct162550500
962518882
1030069056
1115a78366
12a0a10a8
1362ca554
143dca17a
15298e53b
hex1cad140

30069056 has 56 divisors (see below), whose sum is σ = 65425320. Its totient is φ = 13647872.

The previous prime is 30069041. The next prime is 30069121. The reversal of 30069056 is 65096003.

It can be written as a sum of positive squares in 4 ways, for example, as 7182400 + 22886656 = 2680^2 + 4784^2 .

It is a super-2 number, since 2×300690562 = 1808296257462272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31076 + ... + 32028.

Almost surely, 230069056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30069056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32712660).

30069056 is an abundant number, since it is smaller than the sum of its proper divisors (35356264).

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

30069056 is a wasteful number, since it uses less digits than its factorization.

30069056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 30069056 is about 5483.5258730127. The cubic root of 30069056 is about 310.9614823939.

The spelling of 30069056 in words is "thirty million, sixty-nine thousand, fifty-six".

Divisors: 1 2 4 8 16 17 29 32 34 58 64 68 116 136 232 272 464 493 544 928 953 986 1088 1856 1906 1972 3812 3944 7624 7888 15248 15776 16201 27637 30496 31552 32402 55274 60992 64804 110548 129608 221096 259216 442192 469829 518432 884384 939658 1036864 1768768 1879316 3758632 7517264 15034528 30069056