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30378080 = 255296547
BaseRepresentation
bin111001111100…
…0100001100000
32010011100220002
41303320201200
530234044310
63003035132
7516131555
oct163704140
963140802
1030378080
1116169557
12a20baa8
1363a80c5
14406aa2c
152a00da5
hex1cf8860

30378080 has 48 divisors (see below), whose sum is σ = 74254320. Its totient is φ = 11730432.

The previous prime is 30378077. The next prime is 30378113. The reversal of 30378080 is 8087303.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367 + ... + 7913.

It is an arithmetic number, because the mean of its divisors is an integer number (1546965).

Almost surely, 230378080 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 30378080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37127160).

30378080 is an abundant number, since it is smaller than the sum of its proper divisors (43876240).

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

30378080 is a wasteful number, since it uses less digits than its factorization.

30378080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6591 (or 6583 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 30378080 is about 5511.6313374535. The cubic root of 30378080 is about 312.0231190407.

The spelling of 30378080 in words is "thirty million, three hundred seventy-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 29 32 40 58 80 116 145 160 232 290 464 580 928 1160 2320 4640 6547 13094 26188 32735 52376 65470 104752 130940 189863 209504 261880 379726 523760 759452 949315 1047520 1518904 1898630 3037808 3797260 6075616 7594520 15189040 30378080