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30825701 = 53581617
BaseRepresentation
bin111010110010…
…1110011100101
32011000002220122
41311211303211
530342410301
63020411325
7523004564
oct165456345
964002818
1030825701
1116444895
12a3a6b45
136503a7a
144145bdb
152a8d81b
hex1d65ce5

30825701 has 4 divisors (see below), whose sum is σ = 31407372. Its totient is φ = 30244032.

The previous prime is 30825689. The next prime is 30825713. The reversal of 30825701 is 10752803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10752803 = 19565937.

It is an interprime number because it is at equal distance from previous prime (30825689) and next prime (30825713).

It can be written as a sum of positive squares in 2 ways, for example, as 21669025 + 9156676 = 4655^2 + 3026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30825701 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 (30825761) 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, 290756 + ... + 290861.

It is an arithmetic number, because the mean of its divisors is an integer number (7851843).

Almost surely, 230825701 is an apocalyptic number.

It is an amenable number.

30825701 is a deficient number, since it is larger than the sum of its proper divisors (581671).

30825701 is an equidigital number, since it uses as much as digits as its factorization.

30825701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581670.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 30825701 is about 5552.0897867380. The cubic root of 30825701 is about 313.5482061929.

The spelling of 30825701 in words is "thirty million, eight hundred twenty-five thousand, seven hundred one".

Divisors: 1 53 581617 30825701