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30637085 = 56127417
BaseRepresentation
bin111010011011…
…1110000011101
32010122112011212
41310313300131
530320341320
63012354205
7521260643
oct164676035
963575155
1030637085
1116326106
12a315965
136468c6b
1440d7193
152a529c5
hex1d37c1d

30637085 has 4 divisors (see below), whose sum is σ = 36764508. Its totient is φ = 24509664.

The previous prime is 30637051. The next prime is 30637097. The reversal of 30637085 is 58073603.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21187609 + 9449476 = 4603^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 30637085 - 28 = 30636829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063704 + ... + 3063713.

It is an arithmetic number, because the mean of its divisors is an integer number (9191127).

Almost surely, 230637085 is an apocalyptic number.

It is an amenable number.

30637085 is a deficient number, since it is larger than the sum of its proper divisors (6127423).

30637085 is an equidigital number, since it uses as much as digits as its factorization.

30637085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6127422.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30637085 is about 5535.0776868984. The cubic root of 30637085 is about 312.9073854878.

The spelling of 30637085 in words is "thirty million, six hundred thirty-seven thousand, eighty-five".

Divisors: 1 5 6127417 30637085