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30745101 = 310248367
BaseRepresentation
bin111010101001…
…0001000001101
32010212000100110
41311102020031
530332320401
63014550233
7522220602
oct165221015
963760313
1030745101
111639a282
12a368379
1364a618a
1441246a9
152a749d6
hex1d5220d

30745101 has 4 divisors (see below), whose sum is σ = 40993472. Its totient is φ = 20496732.

The previous prime is 30745081. The next prime is 30745103. The reversal of 30745101 is 10154703.

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 30745101 - 25 = 30745069 is a prime.

It is a super-2 number, since 2×307451012 = 1890522471000402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30745103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5124181 + ... + 5124186.

It is an arithmetic number, because the mean of its divisors is an integer number (10248368).

Almost surely, 230745101 is an apocalyptic number.

It is an amenable number.

30745101 is a deficient number, since it is larger than the sum of its proper divisors (10248371).

30745101 is a wasteful number, since it uses less digits than its factorization.

30745101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248370.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 30745101 is about 5544.8265076556. The cubic root of 30745101 is about 313.2746893668.

Adding to 30745101 its reverse (10154703), we get a palindrome (40899804).

The spelling of 30745101 in words is "thirty million, seven hundred forty-five thousand, one hundred one".

Divisors: 1 3 10248367 30745101