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30763768 = 237278479
BaseRepresentation
bin111010101011…
…0101011111000
32010212221221211
41311112223320
530333420033
63015212504
7522326200
oct165265370
963787854
1030763768
1116402302
12a377134
1364b1819
14412b400
152a7a2cd
hex1d56af8

30763768 has 24 divisors (see below), whose sum is σ = 67100400. Its totient is φ = 13184304.

The previous prime is 30763757. The next prime is 30763769. The reversal of 30763768 is 86736703.

It is a self number, because there is not a number n which added to its sum of digits gives 30763768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30763769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38848 + ... + 39631.

It is an arithmetic number, because the mean of its divisors is an integer number (2795850).

Almost surely, 230763768 is an apocalyptic number.

It is an amenable number.

30763768 is an abundant number, since it is smaller than the sum of its proper divisors (36336632).

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

30763768 is a wasteful number, since it uses less digits than its factorization.

30763768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78499 (or 78488 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 30763768 is about 5546.5095330307. The cubic root of 30763768 is about 313.3380784956.

The spelling of 30763768 in words is "thirty million, seven hundred sixty-three thousand, seven hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 49 56 98 196 392 78479 156958 313916 549353 627832 1098706 2197412 3845471 4394824 7690942 15381884 30763768