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30746297 = 37830981
BaseRepresentation
bin111010101001…
…0011010111001
32010212001222202
41311102122321
530332340142
63014555545
7522224231
oct165223271
963761882
1030746297
11163a016a
12a368bb5
1364a689a
144124cc1
152a75032
hex1d526b9

30746297 has 4 divisors (see below), whose sum is σ = 31577316. Its totient is φ = 29915280.

The previous prime is 30746291. The next prime is 30746311. The reversal of 30746297 is 79264703.

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 10863616 + 19882681 = 3296^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 30746297 - 24 = 30746281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30746297.

It is not an unprimeable number, because it can be changed into a prime (30746291) 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, 415454 + ... + 415527.

It is an arithmetic number, because the mean of its divisors is an integer number (7894329).

Almost surely, 230746297 is an apocalyptic number.

30746297 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30746297 is a deficient number, since it is larger than the sum of its proper divisors (831019).

30746297 is an equidigital number, since it uses as much as digits as its factorization.

30746297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831018.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 30746297 is about 5544.9343548864. The cubic root of 30746297 is about 313.2787514955.

The spelling of 30746297 in words is "thirty million, seven hundred forty-six thousand, two hundred ninety-seven".

Divisors: 1 37 830981 30746297