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30601997 = 374431867
BaseRepresentation
bin111010010111…
…1001100001101
32010120202001022
41310233030031
530313230442
63011523525
7521053436
oct164571415
963522038
1030601997
1116301808
12a2b95a5
136455cba
1440c848d
152a473d2
hex1d2f30d

30601997 has 8 divisors (see below), whose sum is σ = 31516896. Its totient is φ = 29691792.

The previous prime is 30601979. The next prime is 30601999. The reversal of 30601997 is 79910603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30601997 - 26 = 30601933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30601999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15458 + ... + 17324.

It is an arithmetic number, because the mean of its divisors is an integer number (3939612).

Almost surely, 230601997 is an apocalyptic number.

30601997 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30601997 is a deficient number, since it is larger than the sum of its proper divisors (914899).

30601997 is a wasteful number, since it uses less digits than its factorization.

30601997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 30601997 is about 5531.9071756493. The cubic root of 30601997 is about 312.7878844707.

The spelling of 30601997 in words is "thirty million, six hundred one thousand, nine hundred ninety-seven".

Divisors: 1 37 443 1867 16391 69079 827081 30601997