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30352839 = 3113724859
BaseRepresentation
bin111001111001…
…0010111000111
32010010002021020
41303302113013
530232242324
63002322223
7515665146
oct163622707
963102236
1030352839
11161515a0
12a1b9373
13639977a
14406175d
1529e8679
hex1cf25c7

30352839 has 16 divisors (see below), whose sum is σ = 45344640. Its totient is φ = 17897760.

The previous prime is 30352811. The next prime is 30352853. The reversal of 30352839 is 93825303.

It is not a de Polignac number, because 30352839 - 213 = 30344647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30352859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11209 + ... + 13650.

It is an arithmetic number, because the mean of its divisors is an integer number (2834040).

Almost surely, 230352839 is an apocalyptic number.

30352839 is a deficient number, since it is larger than the sum of its proper divisors (14991801).

30352839 is a wasteful number, since it uses less digits than its factorization.

30352839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24910.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 30352839 is about 5509.3410676777. The cubic root of 30352839 is about 311.9366755935.

The spelling of 30352839 in words is "thirty million, three hundred fifty-two thousand, eight hundred thirty-nine".

Divisors: 1 3 11 33 37 111 407 1221 24859 74577 273449 820347 919783 2759349 10117613 30352839