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7213989148 = 221803497287
BaseRepresentation
bin1101011011111110…
…01011110100011100
3200121202101121201021
412231333023310130
5104233240123043
63151500453524
7343524616222
oct65577136434
920552347637
107213989148
113072121903
121493b4a2a4
138ac74a742
144c6140b12
152c34d83ed
hex1adfcbd1c

7213989148 has 6 divisors (see below), whose sum is σ = 12624481016. Its totient is φ = 3606994572.

The previous prime is 7213989143. The next prime is 7213989149. The reversal of 7213989148 is 8419893127.

It is a junction number, because it is equal to n+sod(n) for n = 7213989095 and 7213989104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213989143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901748640 + ... + 901748647.

Almost surely, 27213989148 is an apocalyptic number.

It is an amenable number.

7213989148 is a deficient number, since it is larger than the sum of its proper divisors (5410491868).

7213989148 is a wasteful number, since it uses less digits than its factorization.

7213989148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803497291 (or 1803497289 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 7213989148 is about 84935.2055863763. The cubic root of 7213989148 is about 1932.2285503203.

The spelling of 7213989148 in words is "seven billion, two hundred thirteen million, nine hundred eighty-nine thousand, one hundred forty-eight".

Divisors: 1 2 4 1803497287 3606994574 7213989148