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33057397 = 1913912517
BaseRepresentation
bin111111000011…
…0101001110101
32022012111020001
41332012221311
531430314042
63140311301
7550661152
oct176065165
968174201
1033057397
111772956a
12b0a2531
136b057b9
144567229
152d7ebb7
hex1f86a75

33057397 has 8 divisors (see below), whose sum is σ = 35050400. Its totient is φ = 31089744.

The previous prime is 33057389. The next prime is 33057407. The reversal of 33057397 is 79375033.

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 33057397 - 23 = 33057389 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 (33057337) 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, 3618 + ... + 8899.

It is an arithmetic number, because the mean of its divisors is an integer number (4381300).

Almost surely, 233057397 is an apocalyptic number.

It is an amenable number.

33057397 is a deficient number, since it is larger than the sum of its proper divisors (1993003).

33057397 is a wasteful number, since it uses less digits than its factorization.

33057397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12675.

The product of its (nonzero) digits is 59535, while the sum is 37.

The square root of 33057397 is about 5749.5562437461. The cubic root of 33057397 is about 320.9392877613.

The spelling of 33057397 in words is "thirty-three million, fifty-seven thousand, three hundred ninety-seven".

Divisors: 1 19 139 2641 12517 237823 1739863 33057397