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30789401 = 41750961
BaseRepresentation
bin111010101110…
…0111100011001
32010221021010012
41311130330121
530340230101
63015531305
7522464006
oct165347431
963837105
1030789401
111641a595
12a389b35
1364c03a6
1441368ad
152a82bbb
hex1d5cf19

30789401 has 4 divisors (see below), whose sum is σ = 31540404. Its totient is φ = 30038400.

The previous prime is 30789389. The next prime is 30789413. The reversal of 30789401 is 10498703.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30789389) and next prime (30789413).

It can be written as a sum of positive squares in 2 ways, for example, as 13987600 + 16801801 = 3740^2 + 4099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30789401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30789001) 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, 375440 + ... + 375521.

It is an arithmetic number, because the mean of its divisors is an integer number (7885101).

Almost surely, 230789401 is an apocalyptic number.

It is an amenable number.

30789401 is a deficient number, since it is larger than the sum of its proper divisors (751003).

30789401 is an equidigital number, since it uses as much as digits as its factorization.

30789401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751002.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 30789401 is about 5548.8197844226. The cubic root of 30789401 is about 313.4250808989.

The spelling of 30789401 in words is "thirty million, seven hundred eighty-nine thousand, four hundred one".

Divisors: 1 41 750961 30789401