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30769355 = 56153871
BaseRepresentation
bin111010101100…
…0000011001011
32010220020121202
41311120003023
530334104410
63015254415
7522351401
oct165300313
963806552
1030769355
1116406521
12a37a40b
1364b4226
14412d471
152a7bca5
hex1d580cb

30769355 has 4 divisors (see below), whose sum is σ = 36923232. Its totient is φ = 24615480.

The previous prime is 30769327. The next prime is 30769357. The reversal of 30769355 is 55396703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55396703 = 229241907.

It is a de Polignac number, because none of the positive numbers 2k-30769355 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30769357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3076931 + ... + 3076940.

It is an arithmetic number, because the mean of its divisors is an integer number (9230808).

Almost surely, 230769355 is an apocalyptic number.

30769355 is a deficient number, since it is larger than the sum of its proper divisors (6153877).

30769355 is an equidigital number, since it uses as much as digits as its factorization.

30769355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153876.

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 30769355 is about 5547.0131602512. The cubic root of 30769355 is about 313.3570457634.

The spelling of 30769355 in words is "thirty million, seven hundred sixty-nine thousand, three hundred fifty-five".

Divisors: 1 5 6153871 30769355