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30061408 = 2513127569
BaseRepresentation
bin111001010101…
…1001101100000
32002120021111111
41302223031200
530143431113
62552153104
7513342406
oct162531540
962507444
1030061408
1115a72643
12a098794
1362c6c20
143dc7476
15298c13d
hex1cab360

30061408 has 48 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 13741056.

The previous prime is 30061399. The next prime is 30061417. The reversal of 30061408 is 80416003.

It is an interprime number because it is at equal distance from previous prime (30061399) and next prime (30061417).

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, 52548 + ... + 53116.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 230061408 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 30061408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32175360).

30061408 is an abundant number, since it is smaller than the sum of its proper divisors (34289312).

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

30061408 is a wasteful number, since it uses less digits than its factorization.

30061408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 30061408 is about 5482.8284671326. The cubic root of 30061408 is about 310.9351160293.

The spelling of 30061408 in words is "thirty million, sixty-one thousand, four hundred eight".

Divisors: 1 2 4 8 13 16 26 32 52 104 127 208 254 416 508 569 1016 1138 1651 2032 2276 3302 4064 4552 6604 7397 9104 13208 14794 18208 26416 29588 52832 59176 72263 118352 144526 236704 289052 578104 939419 1156208 1878838 2312416 3757676 7515352 15030704 30061408