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30922001 = 112811091
BaseRepresentation
bin111010111110…
…1010100010001
32011012000000022
41311331110101
530404001001
63022433225
7523555415
oct165752421
964160008
1030922001
1116500180
12a432815
136538856
14416cd45
152aac11b
hex1d7d511

30922001 has 4 divisors (see below), whose sum is σ = 33733104. Its totient is φ = 28110900.

The previous prime is 30921967. The next prime is 30922009. The reversal of 30922001 is 10022903.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10022903 = 11911173.

It is a cyclic number.

It is not a de Polignac number, because 30922001 - 222 = 26727697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30922009) 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, 1405535 + ... + 1405556.

It is an arithmetic number, because the mean of its divisors is an integer number (8433276).

Almost surely, 230922001 is an apocalyptic number.

It is an amenable number.

30922001 is a deficient number, since it is larger than the sum of its proper divisors (2811103).

30922001 is a wasteful number, since it uses less digits than its factorization.

30922001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811102.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30922001 is about 5560.7554342913. The cubic root of 30922001 is about 313.8743767025.

Adding to 30922001 its reverse (10022903), we get a palindrome (40944904).

The spelling of 30922001 in words is "thirty million, nine hundred twenty-two thousand, one".

Divisors: 1 11 2811091 30922001