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3221028741 = 37283541987
BaseRepresentation
bin1011111111111100…
…1111111110000101
322022110221012202210
42333333033332011
523044040404431
61251341454033
7142551202230
oct27777177605
98273835683
103221028741
111403206627
1275a871319
133c4422288
14227b00417
1513cba3d46
hexbffcff85

3221028741 has 16 divisors (see below), whose sum is σ = 4925586944. Its totient is φ = 1834080624.

The previous prime is 3221028739. The next prime is 3221028749. The reversal of 3221028741 is 1478201223.

It is not a de Polignac number, because 3221028741 - 21 = 3221028739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3221028699 and 3221028708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221028749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265051 + ... + 276936.

It is an arithmetic number, because the mean of its divisors is an integer number (307849184).

Almost surely, 23221028741 is an apocalyptic number.

It is an amenable number.

3221028741 is a deficient number, since it is larger than the sum of its proper divisors (1704558203).

3221028741 is a wasteful number, since it uses less digits than its factorization.

3221028741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542280.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3221028741 is about 56754.1077015576. The cubic root of 3221028741 is about 1476.8334937190.

Adding to 3221028741 its reverse (1478201223), we get a palindrome (4699229964).

The spelling of 3221028741 in words is "three billion, two hundred twenty-one million, twenty-eight thousand, seven hundred forty-one".

Divisors: 1 3 7 21 283 849 1981 5943 541987 1625961 3793909 11381727 153382321 460146963 1073676247 3221028741