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2212949 = 19116471
BaseRepresentation
bin1000011100010001010101
311011102121002
420130101111
51031303244
6115233045
724544514
oct10342125
94142532
102212949
111281692
128a8785
135c634b
1441867b
152daa4e
hex21c455

2212949 has 4 divisors (see below), whose sum is σ = 2329440. Its totient is φ = 2096460.

The previous prime is 2212939. The next prime is 2212963. The reversal of 2212949 is 9492122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9492122 = 24746061.

It is not a de Polignac number, because 2212949 - 212 = 2208853 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 (2212939) 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, 58217 + ... + 58254.

It is an arithmetic number, because the mean of its divisors is an integer number (582360).

22212949 is an apocalyptic number.

It is an amenable number.

2212949 is a deficient number, since it is larger than the sum of its proper divisors (116491).

2212949 is a wasteful number, since it uses less digits than its factorization.

2212949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116490.

The product of its digits is 2592, while the sum is 29.

The square root of 2212949 is about 1487.5984001067. The cubic root of 2212949 is about 130.3138177766.

The spelling of 2212949 in words is "two million, two hundred twelve thousand, nine hundred forty-nine".

Divisors: 1 19 116471 2212949