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30122373 = 310040791
BaseRepresentation
bin111001011101…
…0000110000101
32002200101010110
41302322012011
530202403443
62553343233
7514015221
oct162720605
962611113
1030122373
1116004426
12a107b19
1363188b8
144001781
1529a0233
hex1cba185

30122373 has 4 divisors (see below), whose sum is σ = 40163168. Its totient is φ = 20081580.

The previous prime is 30122371. The next prime is 30122381. The reversal of 30122373 is 37322103.

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 30122373 - 21 = 30122371 is a prime.

It is a super-2 number, since 2×301223732 = 1814714710302258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30122371) 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, 5020393 + ... + 5020398.

It is an arithmetic number, because the mean of its divisors is an integer number (10040792).

Almost surely, 230122373 is an apocalyptic number.

It is an amenable number.

30122373 is a deficient number, since it is larger than the sum of its proper divisors (10040795).

30122373 is a wasteful number, since it uses less digits than its factorization.

30122373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040794.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 30122373 is about 5488.3852816653. The cubic root of 30122373 is about 311.1451678373.

Adding to 30122373 its reverse (37322103), we get a palindrome (67444476).

The spelling of 30122373 in words is "thirty million, one hundred twenty-two thousand, three hundred seventy-three".

Divisors: 1 3 10040791 30122373