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30353405 = 521128771
BaseRepresentation
bin111001111001…
…0011111111101
32010010010001012
41303302133331
530232302110
63002325005
7515666615
oct163623775
963103035
1030353405
1116151a65
12a1b9765
136399ac4
144061a45
1529e8905
hex1cf27fd

30353405 has 8 divisors (see below), whose sum is σ = 36597984. Its totient is φ = 24166800.

The previous prime is 30353387. The next prime is 30353413. The reversal of 30353405 is 50435303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30353405 - 26 = 30353341 is a prime.

It is a Duffinian number.

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, 13331 + ... + 15440.

It is an arithmetic number, because the mean of its divisors is an integer number (4574748).

Almost surely, 230353405 is an apocalyptic number.

It is an amenable number.

30353405 is a deficient number, since it is larger than the sum of its proper divisors (6244579).

30353405 is a wasteful number, since it uses less digits than its factorization.

30353405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28987.

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 30353405 is about 5509.3924347427. The cubic root of 30353405 is about 311.9386145122.

Adding to 30353405 its reverse (50435303), we get a palindrome (80788708).

The spelling of 30353405 in words is "thirty million, three hundred fifty-three thousand, four hundred five".

Divisors: 1 5 211 1055 28771 143855 6070681 30353405