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30884349 = 310294783
BaseRepresentation
bin111010111010…
…0000111111101
32011010002100210
41311310013331
530401244344
63021543033
7523340556
oct165640775
964102323
1030884349
1116484961
12a414a79
136524682
14415d32d
152aa0db9
hex1d741fd

30884349 has 4 divisors (see below), whose sum is σ = 41179136. Its totient is φ = 20589564.

The previous prime is 30884341. The next prime is 30884351. The reversal of 30884349 is 94348803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30884349 - 23 = 30884341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30884341) 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, 5147389 + ... + 5147394.

It is an arithmetic number, because the mean of its divisors is an integer number (10294784).

Almost surely, 230884349 is an apocalyptic number.

It is an amenable number.

30884349 is a deficient number, since it is larger than the sum of its proper divisors (10294787).

30884349 is a wasteful number, since it uses less digits than its factorization.

30884349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10294786.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 30884349 is about 5557.3688918408. The cubic root of 30884349 is about 313.7469291721.

The spelling of 30884349 in words is "thirty million, eight hundred eighty-four thousand, three hundred forty-nine".

Divisors: 1 3 10294783 30884349